| blob | c49045fb9a9408b8f1611e2f8473db51393df918 |
1 #!@PERL@ -w
2 # -*- perl -*-
3 # @configure_input@
5 eval 'case $# in 0) exec @PERL@ -S "$0";; *) exec @PERL@ -S "$0" "$@";; esac'
6 if 0;
8 # automake - create Makefile.in from Makefile.am
9 # Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
10 # 2003, 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
12 # This program is free software; you can redistribute it and/or modify
13 # it under the terms of the GNU General Public License as published by
14 # the Free Software Foundation; either version 3, or (at your option)
15 # any later version.
17 # This program is distributed in the hope that it will be useful,
18 # but WITHOUT ANY WARRANTY; without even the implied warranty of
19 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 # GNU General Public License for more details.
22 # You should have received a copy of the GNU General Public License
23 # along with this program. If not, see <http://www.gnu.org/licenses/>.
25 # Originally written by David Mackenzie <djm@gnu.ai.mit.edu>.
26 # Perl reimplementation by Tom Tromey <tromey@redhat.com>, and
27 # Alexandre Duret-Lutz <adl@gnu.org>.
29 package Language;
31 BEGIN
32 {
33 my $perllibdir = $ENV{'perllibdir'} || '@datadir@/@PACKAGE@-@APIVERSION@';
34 unshift @INC, (split '@PATH_SEPARATOR@', $perllibdir);
36 # Override SHELL. This is required on DJGPP so that system() uses
37 # bash, not COMMAND.COM which doesn't quote arguments properly.
38 # Other systems aren't expected to use $SHELL when Automake
39 # runs, but it should be safe to drop the `if DJGPP' guard if
40 # it turns up other systems need the same thing. After all,
41 # if SHELL is used, ./configure's SHELL is always better than
42 # the user's SHELL (which may be something like tcsh).
43 $ENV{'SHELL'} = '@SHELL@' if exists $ENV{'DJGPP'};
44 }
46 use Automake::Struct;
47 struct (# Short name of the language (c, f77...).
48 'name' => "\$",
49 # Nice name of the language (C, Fortran 77...).
50 'Name' => "\$",
52 # List of configure variables which must be defined.
53 'config_vars' => '@',
55 'ansi' => "\$",
56 # `pure' is `1' or `'. A `pure' language is one where, if
57 # all the files in a directory are of that language, then we
58 # do not require the C compiler or any code to call it.
59 'pure' => "\$",
61 'autodep' => "\$",
63 # Name of the compiling variable (COMPILE).
64 'compiler' => "\$",
65 # Content of the compiling variable.
66 'compile' => "\$",
67 # Flag to require compilation without linking (-c).
68 'compile_flag' => "\$",
69 'extensions' => '@',
70 # A subroutine to compute a list of possible extensions of
71 # the product given the input extensions.
72 # (defaults to a subroutine which returns ('.$(OBJEXT)', '.lo'))
73 'output_extensions' => "\$",
74 # A list of flag variables used in 'compile'.
75 # (defaults to [])
76 'flags' => "@",
78 # Any tag to pass to libtool while compiling.
79 'libtool_tag' => "\$",
81 # The file to use when generating rules for this language.
82 # The default is 'depend2'.
83 'rule_file' => "\$",
85 # Name of the linking variable (LINK).
86 'linker' => "\$",
87 # Content of the linking variable.
88 'link' => "\$",
90 # Name of the linker variable (LD).
91 'lder' => "\$",
92 # Content of the linker variable ($(CC)).
93 'ld' => "\$",
95 # Flag to specify the output file (-o).
96 'output_flag' => "\$",
97 '_finish' => "\$",
99 # This is a subroutine which is called whenever we finally
100 # determine the context in which a source file will be
101 # compiled.
102 '_target_hook' => "\$",
104 # If TRUE, nodist_ sources will be compiled using specific rules
105 # (i.e. not inference rules). The default is FALSE.
106 'nodist_specific' => "\$");
109 sub finish ($)
110 {
111 my ($self) = @_;
112 if (defined $self->_finish)
113 {
114 &{$self->_finish} ();
115 }
116 }
118 sub target_hook ($$$$%)
119 {
120 my ($self) = @_;
121 if (defined $self->_target_hook)
122 {
123 &{$self->_target_hook} (@_);
124 }
125 }
127 package Automake;
129 use strict;
130 use Automake::Config;
131 use Automake::General;
132 use Automake::XFile;
133 use Automake::Channels;
134 use Automake::ChannelDefs;
135 use Automake::Configure_ac;
136 use Automake::FileUtils;
137 use Automake::Location;
138 use Automake::Condition qw/TRUE FALSE/;
139 use Automake::DisjConditions;
140 use Automake::Options;
141 use Automake::Version;
142 use Automake::Variable;
143 use Automake::VarDef;
144 use Automake::Rule;
145 use Automake::RuleDef;
146 use Automake::Wrap 'makefile_wrap';
147 use File::Basename;
148 use File::Spec;
149 use Carp;
151 ## ----------- ##
152 ## Constants. ##
153 ## ----------- ##
155 # Some regular expressions. One reason to put them here is that it
156 # makes indentation work better in Emacs.
158 # Writing singled-quoted-$-terminated regexes is a pain because
159 # perl-mode thinks of $' as the ${'} variable (instead of a $ followed
160 # by a closing quote. Letting perl-mode think the quote is not closed
161 # leads to all sort of misindentations. On the other hand, defining
162 # regexes as double-quoted strings is far less readable. So usually
163 # we will write:
164 #
165 # $REGEX = '^regex_value' . "\$";
167 my $IGNORE_PATTERN = '^\s*##([^#\n].*)?\n';
168 my $WHITE_PATTERN = '^\s*' . "\$";
169 my $COMMENT_PATTERN = '^#';
170 my $TARGET_PATTERN='[$a-zA-Z0-9_.@%][-.a-zA-Z0-9_(){}/$+@%]*';
171 # A rule has three parts: a list of targets, a list of dependencies,
172 # and optionally actions.
173 my $RULE_PATTERN =
174 "^($TARGET_PATTERN(?:(?:\\\\\n|\\s)+$TARGET_PATTERN)*) *:([^=].*|)\$";
176 # Only recognize leading spaces, not leading tabs. If we recognize
177 # leading tabs here then we need to make the reader smarter, because
178 # otherwise it will think rules like `foo=bar; \' are errors.
179 my $ASSIGNMENT_PATTERN = '^ *([^ \t=:+]*)\s*([:+]?)=\s*(.*)' . "\$";
180 # This pattern recognizes a Gnits version id and sets $1 if the
181 # release is an alpha release. We also allow a suffix which can be
182 # used to extend the version number with a "fork" identifier.
183 my $GNITS_VERSION_PATTERN = '\d+\.\d+([a-z]|\.\d+)?(-[A-Za-z0-9]+)?';
185 my $IF_PATTERN = '^if\s+(!?)\s*([A-Za-z][A-Za-z0-9_]*)\s*(?:#.*)?' . "\$";
186 my $ELSE_PATTERN =
187 '^else(?:\s+(!?)\s*([A-Za-z][A-Za-z0-9_]*))?\s*(?:#.*)?' . "\$";
188 my $ENDIF_PATTERN =
189 '^endif(?:\s+(!?)\s*([A-Za-z][A-Za-z0-9_]*))?\s*(?:#.*)?' . "\$";
190 my $PATH_PATTERN = '(\w|[+/.-])+';
191 # This will pass through anything not of the prescribed form.
192 my $INCLUDE_PATTERN = ('^include\s+'
193 . '((\$\(top_srcdir\)/' . $PATH_PATTERN . ')'
194 . '|(\$\(srcdir\)/' . $PATH_PATTERN . ')'
195 . '|([^/\$]' . $PATH_PATTERN . '))\s*(#.*)?' . "\$");
197 # Match `-d' as a command-line argument in a string.
198 my $DASH_D_PATTERN = "(^|\\s)-d(\\s|\$)";
199 # Directories installed during 'install-exec' phase.
200 my $EXEC_DIR_PATTERN =
201 '^(?:bin|sbin|libexec|sysconf|localstate|lib|pkglib|.*exec.*)' . "\$";
203 # Values for AC_CANONICAL_*
204 use constant AC_CANONICAL_BUILD => 1;
205 use constant AC_CANONICAL_HOST => 2;
206 use constant AC_CANONICAL_TARGET => 3;
208 # Values indicating when something should be cleaned.
209 use constant MOSTLY_CLEAN => 0;
210 use constant CLEAN => 1;
211 use constant DIST_CLEAN => 2;
212 use constant MAINTAINER_CLEAN => 3;
214 # Libtool files.
215 my @libtool_files = qw(ltmain.sh config.guess config.sub);
216 # ltconfig appears here for compatibility with old versions of libtool.
217 my @libtool_sometimes = qw(ltconfig ltcf-c.sh ltcf-cxx.sh ltcf-gcj.sh);
219 # Commonly found files we look for and automatically include in
220 # DISTFILES.
221 my @common_files =
222 (qw(ABOUT-GNU ABOUT-NLS AUTHORS BACKLOG COPYING COPYING.DOC COPYING.LIB
223 COPYING.LESSER ChangeLog INSTALL NEWS README THANKS TODO
224 ansi2knr.1 ansi2knr.c compile config.guess config.rpath config.sub
225 depcomp elisp-comp install-sh libversion.in mdate-sh missing
226 mkinstalldirs py-compile texinfo.tex ylwrap),
227 @libtool_files, @libtool_sometimes);
229 # Commonly used files we auto-include, but only sometimes. This list
230 # is used for the --help output only.
231 my @common_sometimes =
232 qw(aclocal.m4 acconfig.h config.h.top config.h.bot configure
233 configure.ac configure.in stamp-vti);
235 # Standard directories from the GNU Coding Standards, and additional
236 # pkg* directories from Automake. Stored in a hash for fast member check.
237 my %standard_prefix =
238 map { $_ => 1 } (qw(bin data dataroot dvi exec html include info
239 lib libexec lisp localstate man man1 man2 man3
240 man4 man5 man6 man7 man8 man9 oldinclude pdf
241 pkgdatadir pkgincludedir pkglibdir pkglibexecdir
242 ps sbin sharedstate sysconf));
244 # Copyright on generated Makefile.ins.
245 my $gen_copyright = "\
246 # Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
247 # 2003, 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
248 # This Makefile.in is free software; the Free Software Foundation
249 # gives unlimited permission to copy and/or distribute it,
250 # with or without modifications, as long as this notice is preserved.
252 # This program is distributed in the hope that it will be useful,
253 # but WITHOUT ANY WARRANTY, to the extent permitted by law; without
254 # even the implied warranty of MERCHANTABILITY or FITNESS FOR A
255 # PARTICULAR PURPOSE.
256 ";
258 # These constants are returned by the lang_*_rewrite functions.
259 # LANG_SUBDIR means that the resulting object file should be in a
260 # subdir if the source file is. In this case the file name cannot
261 # have `..' components.
262 use constant LANG_IGNORE => 0;
263 use constant LANG_PROCESS => 1;
264 use constant LANG_SUBDIR => 2;
266 # These are used when keeping track of whether an object can be built
267 # by two different paths.
268 use constant COMPILE_LIBTOOL => 1;
269 use constant COMPILE_ORDINARY => 2;
271 # We can't always associate a location to a variable or a rule,
272 # when it's defined by Automake. We use INTERNAL in this case.
273 use constant INTERNAL => new Automake::Location;
274 \f
276 ## ---------------------------------- ##
277 ## Variables related to the options. ##
278 ## ---------------------------------- ##
280 # TRUE if we should always generate Makefile.in.
281 my $force_generation = 1;
283 # From the Perl manual.
284 my $symlink_exists = (eval 'symlink ("", "");', $@ eq '');
286 # TRUE if missing standard files should be installed.
287 my $add_missing = 0;
289 # TRUE if we should copy missing files; otherwise symlink if possible.
290 my $copy_missing = 0;
292 # TRUE if we should always update files that we know about.
293 my $force_missing = 0;
296 ## ---------------------------------------- ##
297 ## Variables filled during files scanning. ##
298 ## ---------------------------------------- ##
300 # Name of the configure.ac file.
301 my $configure_ac;
303 # Files found by scanning configure.ac for LIBOBJS.
304 my %libsources = ();
306 # Names used in AC_CONFIG_HEADER call.
307 my @config_headers = ();
309 # Names used in AC_CONFIG_LINKS call.
310 my @config_links = ();
312 # Directory where output files go. Actually, output files are
313 # relative to this directory.
314 my $output_directory;
316 # List of Makefile.am's to process, and their corresponding outputs.
317 my @input_files = ();
318 my %output_files = ();
320 # Complete list of Makefile.am's that exist.
321 my @configure_input_files = ();
323 # List of files in AC_CONFIG_FILES/AC_OUTPUT without Makefile.am's,
324 # and their outputs.
325 my @other_input_files = ();
326 # Where each AC_CONFIG_FILES/AC_OUTPUT/AC_CONFIG_LINK/AC_CONFIG_HEADER appears.
327 # The keys are the files created by these macros.
328 my %ac_config_files_location = ();
329 # The condition under which AC_CONFIG_FOOS appears.
330 my %ac_config_files_condition = ();
332 # Directory to search for configure-required files. This
333 # will be computed by &locate_aux_dir and can be set using
334 # AC_CONFIG_AUX_DIR in configure.ac.
335 # $CONFIG_AUX_DIR is the `raw' directory, valid only in the source-tree.
336 my $config_aux_dir = '';
337 my $config_aux_dir_set_in_configure_ac = 0;
338 # $AM_CONFIG_AUX_DIR is prefixed with $(top_srcdir), so it can be used
339 # in Makefiles.
340 my $am_config_aux_dir = '';
342 # Directory to search for AC_LIBSOURCE files, as set by AC_CONFIG_LIBOBJ_DIR
343 # in configure.ac.
344 my $config_libobj_dir = '';
346 # Whether AM_GNU_GETTEXT has been seen in configure.ac.
347 my $seen_gettext = 0;
348 # Whether AM_GNU_GETTEXT([external]) is used.
349 my $seen_gettext_external = 0;
350 # Where AM_GNU_GETTEXT appears.
351 my $ac_gettext_location;
352 # Whether AM_GNU_GETTEXT_INTL_SUBDIR has been seen.
353 my $seen_gettext_intl = 0;
355 # Lists of tags supported by Libtool.
356 my %libtool_tags = ();
357 # 1 if Libtool uses LT_SUPPORTED_TAG. If it does, then it also
358 # uses AC_REQUIRE_AUX_FILE.
359 my $libtool_new_api = 0;
361 # Most important AC_CANONICAL_* macro seen so far.
362 my $seen_canonical = 0;
363 # Location of that macro.
364 my $canonical_location;
366 # Where AM_MAINTAINER_MODE appears.
367 my $seen_maint_mode;
369 # Actual version we've seen.
370 my $package_version = '';
372 # Where version is defined.
373 my $package_version_location;
375 # TRUE if we've seen AM_ENABLE_MULTILIB.
376 my $seen_multilib = 0;
378 # TRUE if we've seen AM_PROG_CC_C_O
379 my $seen_cc_c_o = 0;
381 # Location of AC_REQUIRE_AUX_FILE calls, indexed by their argument.
382 my %required_aux_file = ();
384 # Where AM_INIT_AUTOMAKE is called;
385 my $seen_init_automake = 0;
387 # TRUE if we've seen AM_AUTOMAKE_VERSION.
388 my $seen_automake_version = 0;
390 # Hash table of discovered configure substitutions. Keys are names,
391 # values are `FILE:LINE' strings which are used by error message
392 # generation.
393 my %configure_vars = ();
395 # Ignored configure substitutions (i.e., variables not to be output in
396 # Makefile.in)
397 my %ignored_configure_vars = ();
399 # Files included by $configure_ac.
400 my @configure_deps = ();
402 # Greatest timestamp of configure's dependencies.
403 my $configure_deps_greatest_timestamp = 0;
405 # Hash table of AM_CONDITIONAL variables seen in configure.
406 my %configure_cond = ();
408 # This maps extensions onto language names.
409 my %extension_map = ();
411 # List of the DIST_COMMON files we discovered while reading
412 # configure.in
413 my $configure_dist_common = '';
415 # This maps languages names onto objects.
416 my %languages = ();
417 # Maps each linker variable onto a language object.
418 my %link_languages = ();
420 # maps extensions to needed source flags.
421 my %sourceflags = ();
423 # List of targets we must always output.
424 # FIXME: Complete, and remove falsely required targets.
425 my %required_targets =
426 (
427 'all' => 1,
428 'dvi' => 1,
429 'pdf' => 1,
430 'ps' => 1,
431 'info' => 1,
432 'install-info' => 1,
433 'install' => 1,
434 'install-data' => 1,
435 'install-exec' => 1,
436 'uninstall' => 1,
438 # FIXME: Not required, temporary hacks.
439 # Well, actually they are sort of required: the -recursive
440 # targets will run them anyway...
441 'dvi-am' => 1,
442 'pdf-am' => 1,
443 'ps-am' => 1,
444 'info-am' => 1,
445 'install-data-am' => 1,
446 'install-exec-am' => 1,
447 'installcheck-am' => 1,
448 'uninstall-am' => 1,
450 'install-man' => 1,
451 );
453 # Set to 1 if this run will create the Makefile.in that distribute
454 # the files in config_aux_dir.
455 my $automake_will_process_aux_dir = 0;
457 # The name of the Makefile currently being processed.
458 my $am_file = 'BUG';
459 \f
461 ################################################################
463 ## ------------------------------------------ ##
464 ## Variables reset by &initialize_per_input. ##
465 ## ------------------------------------------ ##
467 # Basename and relative dir of the input file.
468 my $am_file_name;
469 my $am_relative_dir;
471 # Same but wrt Makefile.in.
472 my $in_file_name;
473 my $relative_dir;
475 # Relative path to the top directory.
476 my $topsrcdir;
478 # Greatest timestamp of the output's dependencies (excluding
479 # configure's dependencies).
480 my $output_deps_greatest_timestamp;
482 # These two variables are used when generating each Makefile.in.
483 # They hold the Makefile.in until it is ready to be printed.
484 my $output_rules;
485 my $output_vars;
486 my $output_trailer;
487 my $output_all;
488 my $output_header;
490 # This is the conditional stack, updated on if/else/endif, and
491 # used to build Condition objects.
492 my @cond_stack;
494 # This holds the set of included files.
495 my @include_stack;
497 # List of dependencies for the obvious targets.
498 my @all;
499 my @check;
500 my @check_tests;
502 # Keys in this hash table are files to delete. The associated
503 # value tells when this should happen (MOSTLY_CLEAN, DIST_CLEAN, etc.)
504 my %clean_files;
506 # Keys in this hash table are object files or other files in
507 # subdirectories which need to be removed. This only holds files
508 # which are created by compilations. The value in the hash indicates
509 # when the file should be removed.
510 my %compile_clean_files;
512 # Keys in this hash table are directories where we expect to build a
513 # libtool object. We use this information to decide what directories
514 # to delete.
515 my %libtool_clean_directories;
517 # Value of `$(SOURCES)', used by tags.am.
518 my @sources;
519 # Sources which go in the distribution.
520 my @dist_sources;
522 # This hash maps object file names onto their corresponding source
523 # file names. This is used to ensure that each object is created
524 # by a single source file.
525 my %object_map;
527 # This hash maps object file names onto an integer value representing
528 # whether this object has been built via ordinary compilation or
529 # libtool compilation (the COMPILE_* constants).
530 my %object_compilation_map;
533 # This keeps track of the directories for which we've already
534 # created dirstamp code. Keys are directories, values are stamp files.
535 # Several keys can share the same stamp files if they are equivalent
536 # (as are `.//foo' and `foo').
537 my %directory_map;
539 # All .P files.
540 my %dep_files;
542 # This is a list of all targets to run during "make dist".
543 my @dist_targets;
545 # Keep track of all programs declared in this Makefile, without
546 # $(EXEEXT). @substitution@ are not listed.
547 my %known_programs;
549 # Keys in this hash are the basenames of files which must depend on
550 # ansi2knr. Values are either the empty string, or the directory in
551 # which the ANSI source file appears; the directory must have a
552 # trailing `/'.
553 my %de_ansi_files;
555 # This is the name of the redirect `all' target to use.
556 my $all_target;
558 # This keeps track of which extensions we've seen (that we care
559 # about).
560 my %extension_seen;
562 # This is random scratch space for the language finish functions.
563 # Don't randomly overwrite it; examine other uses of keys first.
564 my %language_scratch;
566 # We keep track of which objects need special (per-executable)
567 # handling on a per-language basis.
568 my %lang_specific_files;
570 # This is set when `handle_dist' has finished. Once this happens,
571 # we should no longer push on dist_common.
572 my $handle_dist_run;
574 # Used to store a set of linkers needed to generate the sources currently
575 # under consideration.
576 my %linkers_used;
578 # True if we need `LINK' defined. This is a hack.
579 my $need_link;
581 # Was get_object_extension run?
582 # FIXME: This is a hack. a better switch should be found.
583 my $get_object_extension_was_run;
585 # Record each file processed by make_paragraphs.
586 my %transformed_files;
588 # Cache each file processed by make_paragraphs.
589 # (This is different from %transformed_files because
590 # %transformed_files is reset for each file while %am_file_cache
591 # it global to the run.)
592 my %am_file_cache;
594 ################################################################
596 # var_SUFFIXES_trigger ($TYPE, $VALUE)
597 # ------------------------------------
598 # This is called by Automake::Variable::define() when SUFFIXES
599 # is defined ($TYPE eq '') or appended ($TYPE eq '+').
600 # The work here needs to be performed as a side-effect of the
601 # macro_define() call because SUFFIXES definitions impact
602 # on $KNOWN_EXTENSIONS_PATTERN which is used used when parsing
603 # the input am file.
604 sub var_SUFFIXES_trigger ($$)
605 {
606 my ($type, $value) = @_;
607 accept_extensions (split (' ', $value));
608 }
609 Automake::Variable::hook ('SUFFIXES', \&var_SUFFIXES_trigger);
611 ################################################################
613 ## --------------------------------- ##
614 ## Forward subroutine declarations. ##
615 ## --------------------------------- ##
616 sub register_language (%);
617 sub file_contents_internal ($$$%);
618 sub define_files_variable ($\@$$);
621 # &initialize_per_input ()
622 # ------------------------
623 # (Re)-Initialize per-Makefile.am variables.
624 sub initialize_per_input ()
625 {
626 reset_local_duplicates ();
628 $am_file_name = '';
629 $am_relative_dir = '';
631 $in_file_name = '';
632 $relative_dir = '';
634 $output_deps_greatest_timestamp = 0;
636 $output_rules = '';
637 $output_vars = '';
638 $output_trailer = '';
639 $output_all = '';
640 $output_header = '';
642 Automake::Options::reset;
643 Automake::Variable::reset;
644 Automake::Rule::reset;
646 @cond_stack = ();
648 @include_stack = ();
650 @all = ();
651 @check = ();
652 @check_tests = ();
654 %clean_files = ();
656 @sources = ();
657 @dist_sources = ();
659 %object_map = ();
660 %object_compilation_map = ();
662 %directory_map = ();
664 %dep_files = ();
666 @dist_targets = ();
668 %known_programs = ();
670 %de_ansi_files = ();
672 $all_target = '';
674 %extension_seen = ();
676 %language_scratch = ();
678 %lang_specific_files = ();
680 $handle_dist_run = 0;
682 $need_link = 0;
684 $get_object_extension_was_run = 0;
686 %compile_clean_files = ();
688 # We always include `.'. This isn't strictly correct.
689 %libtool_clean_directories = ('.' => 1);
691 %transformed_files = ();
692 }
695 ################################################################
697 # Initialize our list of languages that are internally supported.
699 # C.
700 register_language ('name' => 'c',
701 'Name' => 'C',
702 'config_vars' => ['CC'],
703 'ansi' => 1,
704 'autodep' => '',
705 'flags' => ['CFLAGS', 'CPPFLAGS'],
706 'compiler' => 'COMPILE',
707 'compile' => '$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS)',
708 'lder' => 'CCLD',
709 'ld' => '$(CC)',
710 'linker' => 'LINK',
711 'link' => '$(CCLD) $(AM_CFLAGS) $(CFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
712 'compile_flag' => '-c',
713 'libtool_tag' => 'CC',
714 'extensions' => ['.c'],
715 '_finish' => \&lang_c_finish);
717 # C++.
718 register_language ('name' => 'cxx',
719 'Name' => 'C++',
720 'config_vars' => ['CXX'],
721 'linker' => 'CXXLINK',
722 'link' => '$(CXXLD) $(AM_CXXFLAGS) $(CXXFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
723 'autodep' => 'CXX',
724 'flags' => ['CXXFLAGS', 'CPPFLAGS'],
725 'compile' => '$(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CXXFLAGS) $(CXXFLAGS)',
726 'compiler' => 'CXXCOMPILE',
727 'compile_flag' => '-c',
728 'output_flag' => '-o',
729 'libtool_tag' => 'CXX',
730 'lder' => 'CXXLD',
731 'ld' => '$(CXX)',
732 'pure' => 1,
733 'extensions' => ['.c++', '.cc', '.cpp', '.cxx', '.C']);
735 # Objective C.
736 register_language ('name' => 'objc',
737 'Name' => 'Objective C',
738 'config_vars' => ['OBJC'],
739 'linker' => 'OBJCLINK',
740 'link' => '$(OBJCLD) $(AM_OBJCFLAGS) $(OBJCFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
741 'autodep' => 'OBJC',
742 'flags' => ['OBJCFLAGS', 'CPPFLAGS'],
743 'compile' => '$(OBJC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_OBJCFLAGS) $(OBJCFLAGS)',
744 'compiler' => 'OBJCCOMPILE',
745 'compile_flag' => '-c',
746 'output_flag' => '-o',
747 'lder' => 'OBJCLD',
748 'ld' => '$(OBJC)',
749 'pure' => 1,
750 'extensions' => ['.m']);
752 # Unified Parallel C.
753 register_language ('name' => 'upc',
754 'Name' => 'Unified Parallel C',
755 'config_vars' => ['UPC'],
756 'linker' => 'UPCLINK',
757 'link' => '$(UPCLD) $(AM_UPCFLAGS) $(UPCFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
758 'autodep' => 'UPC',
759 'flags' => ['UPCFLAGS', 'CPPFLAGS'],
760 'compile' => '$(UPC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_UPCFLAGS) $(UPCFLAGS)',
761 'compiler' => 'UPCCOMPILE',
762 'compile_flag' => '-c',
763 'output_flag' => '-o',
764 'lder' => 'UPCLD',
765 'ld' => '$(UPC)',
766 'pure' => 1,
767 'extensions' => ['.upc']);
769 # Headers.
770 register_language ('name' => 'header',
771 'Name' => 'Header',
772 'extensions' => ['.h', '.H', '.hxx', '.h++', '.hh',
773 '.hpp', '.inc'],
774 # No output.
775 'output_extensions' => sub { return () },
776 # Nothing to do.
777 '_finish' => sub { });
779 # Yacc (C & C++).
780 register_language ('name' => 'yacc',
781 'Name' => 'Yacc',
782 'config_vars' => ['YACC'],
783 'flags' => ['YFLAGS'],
784 'compile' => '$(YACC) $(YFLAGS) $(AM_YFLAGS)',
785 'compiler' => 'YACCCOMPILE',
786 'extensions' => ['.y'],
787 'output_extensions' => sub { (my $ext = $_[0]) =~ tr/y/c/;
788 return ($ext,) },
789 'rule_file' => 'yacc',
790 '_finish' => \&lang_yacc_finish,
791 '_target_hook' => \&lang_yacc_target_hook,
792 'nodist_specific' => 1);
793 register_language ('name' => 'yaccxx',
794 'Name' => 'Yacc (C++)',
795 'config_vars' => ['YACC'],
796 'rule_file' => 'yacc',
797 'flags' => ['YFLAGS'],
798 'compiler' => 'YACCCOMPILE',
799 'compile' => '$(YACC) $(YFLAGS) $(AM_YFLAGS)',
800 'extensions' => ['.y++', '.yy', '.yxx', '.ypp'],
801 'output_extensions' => sub { (my $ext = $_[0]) =~ tr/y/c/;
802 return ($ext,) },
803 '_finish' => \&lang_yacc_finish,
804 '_target_hook' => \&lang_yacc_target_hook,
805 'nodist_specific' => 1);
807 # Lex (C & C++).
808 register_language ('name' => 'lex',
809 'Name' => 'Lex',
810 'config_vars' => ['LEX'],
811 'rule_file' => 'lex',
812 'flags' => ['LFLAGS'],
813 'compile' => '$(LEX) $(LFLAGS) $(AM_LFLAGS)',
814 'compiler' => 'LEXCOMPILE',
815 'extensions' => ['.l'],
816 'output_extensions' => sub { (my $ext = $_[0]) =~ tr/l/c/;
817 return ($ext,) },
818 '_finish' => \&lang_lex_finish,
819 '_target_hook' => \&lang_lex_target_hook,
820 'nodist_specific' => 1);
821 register_language ('name' => 'lexxx',
822 'Name' => 'Lex (C++)',
823 'config_vars' => ['LEX'],
824 'rule_file' => 'lex',
825 'flags' => ['LFLAGS'],
826 'compile' => '$(LEX) $(LFLAGS) $(AM_LFLAGS)',
827 'compiler' => 'LEXCOMPILE',
828 'extensions' => ['.l++', '.ll', '.lxx', '.lpp'],
829 'output_extensions' => sub { (my $ext = $_[0]) =~ tr/l/c/;
830 return ($ext,) },
831 '_finish' => \&lang_lex_finish,
832 '_target_hook' => \&lang_lex_target_hook,
833 'nodist_specific' => 1);
835 # Assembler.
836 register_language ('name' => 'asm',
837 'Name' => 'Assembler',
838 'config_vars' => ['CCAS', 'CCASFLAGS'],
840 'flags' => ['CCASFLAGS'],
841 # Users can set AM_CCASFLAGS to include DEFS, INCLUDES,
842 # or anything else required. They can also set CCAS.
843 # Or simply use Preprocessed Assembler.
844 'compile' => '$(CCAS) $(AM_CCASFLAGS) $(CCASFLAGS)',
845 'compiler' => 'CCASCOMPILE',
846 'compile_flag' => '-c',
847 'output_flag' => '-o',
848 'extensions' => ['.s'],
850 # With assembly we still use the C linker.
851 '_finish' => \&lang_c_finish);
853 # Preprocessed Assembler.
854 register_language ('name' => 'cppasm',
855 'Name' => 'Preprocessed Assembler',
856 'config_vars' => ['CCAS', 'CCASFLAGS'],
858 'autodep' => 'CCAS',
859 'flags' => ['CCASFLAGS', 'CPPFLAGS'],
860 'compile' => '$(CCAS) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CCASFLAGS) $(CCASFLAGS)',
861 'compiler' => 'CPPASCOMPILE',
862 'compile_flag' => '-c',
863 'output_flag' => '-o',
864 'extensions' => ['.S', '.sx'],
866 # With assembly we still use the C linker.
867 '_finish' => \&lang_c_finish);
869 # Fortran 77
870 register_language ('name' => 'f77',
871 'Name' => 'Fortran 77',
872 'config_vars' => ['F77'],
873 'linker' => 'F77LINK',
874 'link' => '$(F77LD) $(AM_FFLAGS) $(FFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
875 'flags' => ['FFLAGS'],
876 'compile' => '$(F77) $(AM_FFLAGS) $(FFLAGS)',
877 'compiler' => 'F77COMPILE',
878 'compile_flag' => '-c',
879 'output_flag' => '-o',
880 'libtool_tag' => 'F77',
881 'lder' => 'F77LD',
882 'ld' => '$(F77)',
883 'pure' => 1,
884 'extensions' => ['.f', '.for']);
886 # Fortran
887 register_language ('name' => 'fc',
888 'Name' => 'Fortran',
889 'config_vars' => ['FC'],
890 'linker' => 'FCLINK',
891 'link' => '$(FCLD) $(AM_FCFLAGS) $(FCFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
892 'flags' => ['FCFLAGS'],
893 'compile' => '$(FC) $(AM_FCFLAGS) $(FCFLAGS)',
894 'compiler' => 'FCCOMPILE',
895 'compile_flag' => '-c',
896 'output_flag' => '-o',
897 'lder' => 'FCLD',
898 'ld' => '$(FC)',
899 'pure' => 1,
900 'extensions' => ['.f90', '.f95', '.f03', '.f08']);
902 # Preprocessed Fortran
903 register_language ('name' => 'ppfc',
904 'Name' => 'Preprocessed Fortran',
905 'config_vars' => ['FC'],
906 'linker' => 'FCLINK',
907 'link' => '$(FCLD) $(AM_FCFLAGS) $(FCFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
908 'lder' => 'FCLD',
909 'ld' => '$(FC)',
910 'flags' => ['FCFLAGS', 'CPPFLAGS'],
911 'compiler' => 'PPFCCOMPILE',
912 'compile' => '$(FC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_FCFLAGS) $(FCFLAGS)',
913 'compile_flag' => '-c',
914 'output_flag' => '-o',
915 'libtool_tag' => 'FC',
916 'pure' => 1,
917 'extensions' => ['.F90','.F95', '.F03', '.F08']);
919 # Preprocessed Fortran 77
920 #
921 # The current support for preprocessing Fortran 77 just involves
922 # passing `$(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS)
923 # $(CPPFLAGS)' as additional flags to the Fortran 77 compiler, since
924 # this is how GNU Make does it; see the `GNU Make Manual, Edition 0.51
925 # for `make' Version 3.76 Beta' (specifically, from info file
926 # `(make)Catalogue of Rules').
927 #
928 # A better approach would be to write an Autoconf test
929 # (i.e. AC_PROG_FPP) for a Fortran 77 preprocessor, because not all
930 # Fortran 77 compilers know how to do preprocessing. The Autoconf
931 # macro AC_PROG_FPP should test the Fortran 77 compiler first for
932 # preprocessing capabilities, and then fall back on cpp (if cpp were
933 # available).
934 register_language ('name' => 'ppf77',
935 'Name' => 'Preprocessed Fortran 77',
936 'config_vars' => ['F77'],
937 'linker' => 'F77LINK',
938 'link' => '$(F77LD) $(AM_FFLAGS) $(FFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
939 'lder' => 'F77LD',
940 'ld' => '$(F77)',
941 'flags' => ['FFLAGS', 'CPPFLAGS'],
942 'compiler' => 'PPF77COMPILE',
943 'compile' => '$(F77) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_FFLAGS) $(FFLAGS)',
944 'compile_flag' => '-c',
945 'output_flag' => '-o',
946 'libtool_tag' => 'F77',
947 'pure' => 1,
948 'extensions' => ['.F']);
950 # Ratfor.
951 register_language ('name' => 'ratfor',
952 'Name' => 'Ratfor',
953 'config_vars' => ['F77'],
954 'linker' => 'F77LINK',
955 'link' => '$(F77LD) $(AM_FFLAGS) $(FFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
956 'lder' => 'F77LD',
957 'ld' => '$(F77)',
958 'flags' => ['RFLAGS', 'FFLAGS'],
959 # FIXME also FFLAGS.
960 'compile' => '$(F77) $(AM_FFLAGS) $(FFLAGS) $(AM_RFLAGS) $(RFLAGS)',
961 'compiler' => 'RCOMPILE',
962 'compile_flag' => '-c',
963 'output_flag' => '-o',
964 'libtool_tag' => 'F77',
965 'pure' => 1,
966 'extensions' => ['.r']);
968 # Java via gcj.
969 register_language ('name' => 'java',
970 'Name' => 'Java',
971 'config_vars' => ['GCJ'],
972 'linker' => 'GCJLINK',
973 'link' => '$(GCJLD) $(AM_GCJFLAGS) $(GCJFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
974 'autodep' => 'GCJ',
975 'flags' => ['GCJFLAGS'],
976 'compile' => '$(GCJ) $(AM_GCJFLAGS) $(GCJFLAGS)',
977 'compiler' => 'GCJCOMPILE',
978 'compile_flag' => '-c',
979 'output_flag' => '-o',
980 'libtool_tag' => 'GCJ',
981 'lder' => 'GCJLD',
982 'ld' => '$(GCJ)',
983 'pure' => 1,
984 'extensions' => ['.java', '.class', '.zip', '.jar']);
986 ################################################################
988 # Error reporting functions.
990 # err_am ($MESSAGE, [%OPTIONS])
991 # -----------------------------
992 # Uncategorized errors about the current Makefile.am.
993 sub err_am ($;%)
994 {
995 msg_am ('error', @_);
996 }
998 # err_ac ($MESSAGE, [%OPTIONS])
999 # -----------------------------
1000 # Uncategorized errors about configure.ac.
1001 sub err_ac ($;%)
1002 {
1003 msg_ac ('error', @_);
1004 }
1006 # msg_am ($CHANNEL, $MESSAGE, [%OPTIONS])
1007 # ---------------------------------------
1008 # Messages about about the current Makefile.am.
1009 sub msg_am ($$;%)
1010 {
1011 my ($channel, $msg, %opts) = @_;
1012 msg $channel, "${am_file}.am", $msg, %opts;
1013 }
1015 # msg_ac ($CHANNEL, $MESSAGE, [%OPTIONS])
1016 # ---------------------------------------
1017 # Messages about about configure.ac.
1018 sub msg_ac ($$;%)
1019 {
1020 my ($channel, $msg, %opts) = @_;
1021 msg $channel, $configure_ac, $msg, %opts;
1022 }
1024 ################################################################
1026 # subst ($TEXT)
1027 # -------------
1028 # Return a configure-style substitution using the indicated text.
1029 # We do this to avoid having the substitutions directly in automake.in;
1030 # when we do that they are sometimes removed and this causes confusion
1031 # and bugs.
1032 sub subst ($)
1033 {
1034 my ($text) = @_;
1035 return '@' . $text . '@';
1036 }
1038 ################################################################
1041 # $BACKPATH
1042 # &backname ($REL-DIR)
1043 # --------------------
1044 # If I `cd $REL-DIR', then to come back, I should `cd $BACKPATH'.
1045 # For instance `src/foo' => `../..'.
1046 # Works with non strictly increasing paths, i.e., `src/../lib' => `..'.
1047 sub backname ($)
1048 {
1049 my ($file) = @_;
1050 my @res;
1051 foreach (split (/\//, $file))
1052 {
1053 next if $_ eq '.' || $_ eq '';
1054 if ($_ eq '..')
1055 {
1056 pop @res;
1057 }
1058 else
1059 {
1060 push (@res, '..');
1061 }
1062 }
1063 return join ('/', @res) || '.';
1064 }
1066 ################################################################
1069 # Handle AUTOMAKE_OPTIONS variable. Return 1 on error, 0 otherwise.
1070 sub handle_options
1071 {
1072 my $var = var ('AUTOMAKE_OPTIONS');
1073 if ($var)
1074 {
1075 if ($var->has_conditional_contents)
1076 {
1077 msg_var ('unsupported', $var,
1078 "`AUTOMAKE_OPTIONS' cannot have conditional contents");
1079 }
1080 foreach my $locvals ($var->value_as_list_recursive (cond_filter => TRUE,
1081 location => 1))
1082 {
1083 my ($loc, $value) = @$locvals;
1084 return 1 if (process_option_list ($loc, $value))
1085 }
1086 }
1088 if ($strictness == GNITS)
1089 {
1090 set_option ('readme-alpha', INTERNAL);
1091 set_option ('std-options', INTERNAL);
1092 set_option ('check-news', INTERNAL);
1093 }
1095 return 0;
1096 }
1098 # shadow_unconditionally ($varname, $where)
1099 # -----------------------------------------
1100 # Return a $(variable) that contains all possible values
1101 # $varname can take.
1102 # If the VAR wasn't defined conditionally, return $(VAR).
1103 # Otherwise we create a am__VAR_DIST variable which contains
1104 # all possible values, and return $(am__VAR_DIST).
1105 sub shadow_unconditionally ($$)
1106 {
1107 my ($varname, $where) = @_;
1108 my $var = var $varname;
1109 if ($var->has_conditional_contents)
1110 {
1111 $varname = "am__${varname}_DIST";
1112 my @files = uniq ($var->value_as_list_recursive);
1113 define_pretty_variable ($varname, TRUE, $where, @files);
1114 }
1115 return "\$($varname)"
1116 }
1118 # get_object_extension ($EXTENSION)
1119 # ---------------------------------
1120 # Prefix $EXTENSION with $U if ansi2knr is in use.
1121 sub get_object_extension ($)
1122 {
1123 my ($extension) = @_;
1125 # Check for automatic de-ANSI-fication.
1126 $extension = '$U' . $extension
1127 if option 'ansi2knr';
1129 $get_object_extension_was_run = 1;
1131 return $extension;
1132 }
1134 # check_user_variables (@LIST)
1135 # ----------------------------
1136 # Make sure each variable VAR in @LIST does not exist, suggest using AM_VAR
1137 # otherwise.
1138 sub check_user_variables (@)
1139 {
1140 my @dont_override = @_;
1141 foreach my $flag (@dont_override)
1142 {
1143 my $var = var $flag;
1144 if ($var)
1145 {
1146 for my $cond ($var->conditions->conds)
1147 {
1148 if ($var->rdef ($cond)->owner == VAR_MAKEFILE)
1149 {
1150 msg_cond_var ('gnu', $cond, $flag,
1151 "`$flag' is a user variable, "
1152 . "you should not override it;\n"
1153 . "use `AM_$flag' instead.");
1154 }
1155 }
1156 }
1157 }
1158 }
1160 # Call finish function for each language that was used.
1161 sub handle_languages
1162 {
1163 if (! option 'no-dependencies')
1164 {
1165 # Include auto-dep code. Don't include it if DEP_FILES would
1166 # be empty.
1167 if (&saw_sources_p (0) && keys %dep_files)
1168 {
1169 # Set location of depcomp.
1170 &define_variable ('depcomp',
1171 "\$(SHELL) $am_config_aux_dir/depcomp",
1172 INTERNAL);
1173 &define_variable ('am__depfiles_maybe', 'depfiles', INTERNAL);
1175 require_conf_file ("$am_file.am", FOREIGN, 'depcomp');
1177 my @deplist = sort keys %dep_files;
1178 # Generate each `include' individually. Irix 6 make will
1179 # not properly include several files resulting from a
1180 # variable expansion; generating many separate includes
1181 # seems safest.
1182 $output_rules .= "\n";
1183 foreach my $iter (@deplist)
1184 {
1185 $output_rules .= (subst ('AMDEP_TRUE')
1186 . subst ('am__include')
1187 . ' '
1188 . subst ('am__quote')
1189 . $iter
1190 . subst ('am__quote')
1191 . "\n");
1192 }
1194 # Compute the set of directories to remove in distclean-depend.
1195 my @depdirs = uniq (map { dirname ($_) } @deplist);
1196 $output_rules .= &file_contents ('depend',
1197 new Automake::Location,
1198 DEPDIRS => "@depdirs");
1199 }
1200 }
1201 else
1202 {
1203 &define_variable ('depcomp', '', INTERNAL);
1204 &define_variable ('am__depfiles_maybe', '', INTERNAL);
1205 }
1207 my %done;
1209 # Is the c linker needed?
1210 my $needs_c = 0;
1211 foreach my $ext (sort keys %extension_seen)
1212 {
1213 next unless $extension_map{$ext};
1215 my $lang = $languages{$extension_map{$ext}};
1217 my $rule_file = $lang->rule_file || 'depend2';
1219 # Get information on $LANG.
1220 my $pfx = $lang->autodep;
1221 my $fpfx = ($pfx eq '') ? 'CC' : $pfx;
1223 my ($AMDEP, $FASTDEP) =
1224 (option 'no-dependencies' || $lang->autodep eq 'no')
1225 ? ('FALSE', 'FALSE') : ('AMDEP', "am__fastdep$fpfx");
1227 my %transform = ('EXT' => $ext,
1228 'PFX' => $pfx,
1229 'FPFX' => $fpfx,
1230 'AMDEP' => $AMDEP,
1231 'FASTDEP' => $FASTDEP,
1232 '-c' => $lang->compile_flag || '',
1233 # These are not used, but they need to be defined
1234 # so &transform do not complain.
1235 SUBDIROBJ => 0,
1236 'DERIVED-EXT' => 'BUG',
1237 DIST_SOURCE => 1,
1238 );
1240 # Generate the appropriate rules for this extension.
1241 if (((! option 'no-dependencies') && $lang->autodep ne 'no')
1242 || defined $lang->compile)
1243 {
1244 # Some C compilers don't support -c -o. Use it only if really
1245 # needed.
1246 my $output_flag = $lang->output_flag || '';
1247 $output_flag = '-o'
1248 if (! $output_flag
1249 && $lang->name eq 'c'
1250 && option 'subdir-objects');
1252 # Compute a possible derived extension.
1253 # This is not used by depend2.am.
1254 my $der_ext = (&{$lang->output_extensions} ($ext))[0];
1256 # When we output an inference rule like `.c.o:' we
1257 # have two cases to consider: either subdir-objects
1258 # is used, or it is not.
1259 #
1260 # In the latter case the rule is used to build objects
1261 # in the current directory, and dependencies always
1262 # go into `./$(DEPDIR)/'. We can hard-code this value.
1263 #
1264 # In the former case the rule can be used to build
1265 # objects in sub-directories too. Dependencies should
1266 # go into the appropriate sub-directories, e.g.,
1267 # `sub/$(DEPDIR)/'. The value of this directory
1268 # needs to be computed on-the-fly.
1269 #
1270 # DEPBASE holds the name of this directory, plus the
1271 # basename part of the object file (extensions Po, TPo,
1272 # Plo, TPlo will be added later as appropriate). It is
1273 # either hardcoded, or a shell variable (`$depbase') that
1274 # will be computed by the rule.
1275 my $depbase =
1276 option ('subdir-objects') ? '$$depbase' : '$(DEPDIR)/$*';
1277 $output_rules .=
1278 file_contents ($rule_file,
1279 new Automake::Location,
1280 %transform,
1281 GENERIC => 1,
1283 'DERIVED-EXT' => $der_ext,
1285 DEPBASE => $depbase,
1286 BASE => '$*',
1287 SOURCE => '$<',
1288 SOURCEFLAG => $sourceflags{$ext} || '',
1289 OBJ => '$@',
1290 OBJOBJ => '$@',
1291 LTOBJ => '$@',
1293 COMPILE => '$(' . $lang->compiler . ')',
1294 LTCOMPILE => '$(LT' . $lang->compiler . ')',
1295 -o => $output_flag,
1296 SUBDIROBJ => !! option 'subdir-objects');
1297 }
1299 # Now include code for each specially handled object with this
1300 # language.
1301 my %seen_files = ();
1302 foreach my $file (@{$lang_specific_files{$lang->name}})
1303 {
1304 my ($derived, $source, $obj, $myext, $srcext, %file_transform) = @$file;
1306 # We might see a given object twice, for instance if it is
1307 # used under different conditions.
1308 next if defined $seen_files{$obj};
1309 $seen_files{$obj} = 1;
1311 prog_error ("found " . $lang->name .
1312 " in handle_languages, but compiler not defined")
1313 unless defined $lang->compile;
1315 my $obj_compile = $lang->compile;
1317 # Rewrite each occurrence of `AM_$flag' in the compile
1318 # rule into `${derived}_$flag' if it exists.
1319 for my $flag (@{$lang->flags})
1320 {
1321 my $val = "${derived}_$flag";
1322 $obj_compile =~ s/\(AM_$flag\)/\($val\)/
1323 if set_seen ($val);
1324 }
1326 my $libtool_tag = '';
1327 if ($lang->libtool_tag && exists $libtool_tags{$lang->libtool_tag})
1328 {
1329 $libtool_tag = '--tag=' . $lang->libtool_tag . ' '
1330 }
1332 my $ptltflags = "${derived}_LIBTOOLFLAGS";
1333 $ptltflags = 'AM_LIBTOOLFLAGS' unless set_seen $ptltflags;
1335 my $obj_ltcompile =
1336 "\$(LIBTOOL) $libtool_tag\$($ptltflags) \$(LIBTOOLFLAGS) "
1337 . "--mode=compile $obj_compile";
1339 # We _need_ `-o' for per object rules.
1340 my $output_flag = $lang->output_flag || '-o';
1342 my $depbase = dirname ($obj);
1343 $depbase = ''
1344 if $depbase eq '.';
1345 $depbase .= '/'
1346 unless $depbase eq '';
1347 $depbase .= '$(DEPDIR)/' . basename ($obj);
1349 # Support for deansified files in subdirectories is ugly
1350 # enough to deserve an explanation.
1351 #
1352 # A Note about normal ansi2knr processing first. On
1353 #
1354 # AUTOMAKE_OPTIONS = ansi2knr
1355 # bin_PROGRAMS = foo
1356 # foo_SOURCES = foo.c
1357 #
1358 # we generate rules similar to:
1359 #
1360 # foo: foo$U.o; link ...
1361 # foo$U.o: foo$U.c; compile ...
1362 # foo_.c: foo.c; ansi2knr ...
1363 #
1364 # this is fairly compact, and will call ansi2knr depending
1365 # on the value of $U (`' or `_').
1366 #
1367 # It's harder with subdir sources. On
1368 #
1369 # AUTOMAKE_OPTIONS = ansi2knr
1370 # bin_PROGRAMS = foo
1371 # foo_SOURCES = sub/foo.c
1372 #
1373 # we have to create foo_.c in the current directory.
1374 # (Unless the user asks 'subdir-objects'.) This is important
1375 # in case the same file (`foo.c') is compiled from other
1376 # directories with different cpp options: foo_.c would
1377 # be preprocessed for only one set of options if it were
1378 # put in the subdirectory.
1379 #
1380 # Because foo$U.o must be built from either foo_.c or
1381 # sub/foo.c we can't be as concise as in the first example.
1382 # Instead we output
1383 #
1384 # foo: foo$U.o; link ...
1385 # foo_.o: foo_.c; compile ...
1386 # foo.o: sub/foo.c; compile ...
1387 # foo_.c: foo.c; ansi2knr ...
1388 #
1389 # This is why we'll now transform $rule_file twice
1390 # if we detect this case.
1391 # A first time we output the compile rule with `$U'
1392 # replaced by `_' and the source directory removed,
1393 # and another time we simply remove `$U'.
1394 #
1395 # Note that at this point $source (as computed by
1396 # &handle_single_transform) is `sub/foo$U.c'.
1397 # This can be confusing: it can be used as-is when
1398 # subdir-objects is set, otherwise you have to know
1399 # it really means `foo_.c' or `sub/foo.c'.
1400 my $objdir = dirname ($obj);
1401 my $srcdir = dirname ($source);
1402 if ($lang->ansi && $obj =~ /\$U/)
1403 {
1404 prog_error "`$obj' contains \$U, but `$source' doesn't."
1405 if $source !~ /\$U/;
1407 (my $source_ = $source) =~ s/\$U/_/g;
1408 # Output an additional rule if _.c and .c are not in
1409 # the same directory. (_.c is always in $objdir.)
1410 if ($objdir ne $srcdir)
1411 {
1412 (my $obj_ = $obj) =~ s/\$U/_/g;
1413 (my $depbase_ = $depbase) =~ s/\$U/_/g;
1414 $source_ = basename ($source_);
1416 $output_rules .=
1417 file_contents ($rule_file,
1418 new Automake::Location,
1419 %transform,
1420 GENERIC => 0,
1422 DEPBASE => $depbase_,
1423 BASE => $obj_,
1424 SOURCE => $source_,
1425 SOURCEFLAG => $sourceflags{$srcext} || '',
1426 OBJ => "$obj_$myext",
1427 OBJOBJ => "$obj_.obj",
1428 LTOBJ => "$obj_.lo",
1430 COMPILE => $obj_compile,
1431 LTCOMPILE => $obj_ltcompile,
1432 -o => $output_flag,
1433 %file_transform);
1434 $obj =~ s/\$U//g;
1435 $depbase =~ s/\$U//g;
1436 $source =~ s/\$U//g;
1437 }
1438 }
1440 $output_rules .=
1441 file_contents ($rule_file,
1442 new Automake::Location,
1443 %transform,
1444 GENERIC => 0,
1446 DEPBASE => $depbase,
1447 BASE => $obj,
1448 SOURCE => $source,
1449 SOURCEFLAG => $sourceflags{$srcext} || '',
1450 # Use $myext and not `.o' here, in case
1451 # we are actually building a new source
1452 # file -- e.g. via yacc.
1453 OBJ => "$obj$myext",
1454 OBJOBJ => "$obj.obj",
1455 LTOBJ => "$obj.lo",
1457 COMPILE => $obj_compile,
1458 LTCOMPILE => $obj_ltcompile,
1459 -o => $output_flag,
1460 %file_transform);
1461 }
1463 # The rest of the loop is done once per language.
1464 next if defined $done{$lang};
1465 $done{$lang} = 1;
1467 # Load the language dependent Makefile chunks.
1468 my %lang = map { uc ($_) => 0 } keys %languages;
1469 $lang{uc ($lang->name)} = 1;
1470 $output_rules .= file_contents ('lang-compile',
1471 new Automake::Location,
1472 %transform, %lang);
1474 # If the source to a program consists entirely of code from a
1475 # `pure' language, for instance C++ or Fortran 77, then we
1476 # don't need the C compiler code. However if we run into
1477 # something unusual then we do generate the C code. There are
1478 # probably corner cases here that do not work properly.
1479 # People linking Java code to Fortran code deserve pain.
1480 $needs_c ||= ! $lang->pure;
1482 define_compiler_variable ($lang)
1483 if ($lang->compile);
1485 define_linker_variable ($lang)
1486 if ($lang->link);
1488 require_variables ("$am_file.am", $lang->Name . " source seen",
1489 TRUE, @{$lang->config_vars});
1491 # Call the finisher.
1492 $lang->finish;
1494 # Flags listed in `->flags' are user variables (per GNU Standards),
1495 # they should not be overridden in the Makefile...
1496 my @dont_override = @{$lang->flags};
1497 # ... and so is LDFLAGS.
1498 push @dont_override, 'LDFLAGS' if $lang->link;
1500 check_user_variables @dont_override;
1501 }
1503 # If the project is entirely C++ or entirely Fortran 77 (i.e., 1
1504 # suffix rule was learned), don't bother with the C stuff. But if
1505 # anything else creeps in, then use it.
1506 $needs_c = 1
1507 if $need_link || suffix_rules_count > 1;
1509 if ($needs_c)
1510 {
1511 &define_compiler_variable ($languages{'c'})
1512 unless defined $done{$languages{'c'}};
1513 define_linker_variable ($languages{'c'});
1514 }
1515 }
1518 # append_exeext { PREDICATE } $MACRO
1519 # ----------------------------------
1520 # Append $(EXEEXT) to each filename in $F appearing in the Makefile
1521 # variable $MACRO if &PREDICATE($F) is true. @substitutions@ are
1522 # ignored.
1523 #
1524 # This is typically used on all filenames of *_PROGRAMS, and filenames
1525 # of TESTS that are programs.
1526 sub append_exeext (&$)
1527 {
1528 my ($pred, $macro) = @_;
1530 transform_variable_recursively
1531 ($macro, $macro, 'am__EXEEXT', 0, INTERNAL,
1532 sub {
1533 my ($subvar, $val, $cond, $full_cond) = @_;
1534 # Append $(EXEEXT) unless the user did it already, or it's a
1535 # @substitution@.
1536 $val .= '$(EXEEXT)'
1537 if $val !~ /(?:\$\(EXEEXT\)$|^[@]\w+[@]$)/ && &$pred ($val);
1538 return $val;
1539 });
1540 }
1543 # Check to make sure a source defined in LIBOBJS is not explicitly
1544 # mentioned. This is a separate function (as opposed to being inlined
1545 # in handle_source_transform) because it isn't always appropriate to
1546 # do this check.
1547 sub check_libobjs_sources
1548 {
1549 my ($one_file, $unxformed) = @_;
1551 foreach my $prefix ('', 'EXTRA_', 'dist_', 'nodist_',
1552 'dist_EXTRA_', 'nodist_EXTRA_')
1553 {
1554 my @files;
1555 my $varname = $prefix . $one_file . '_SOURCES';
1556 my $var = var ($varname);
1557 if ($var)
1558 {
1559 @files = $var->value_as_list_recursive;
1560 }
1561 elsif ($prefix eq '')
1562 {
1563 @files = ($unxformed . '.c');
1564 }
1565 else
1566 {
1567 next;
1568 }
1570 foreach my $file (@files)
1571 {
1572 err_var ($prefix . $one_file . '_SOURCES',
1573 "automatically discovered file `$file' should not" .
1574 " be explicitly mentioned")
1575 if defined $libsources{$file};
1576 }
1577 }
1578 }
1581 # @OBJECTS
1582 # handle_single_transform ($VAR, $TOPPARENT, $DERIVED, $OBJ, $FILE, %TRANSFORM)
1583 # -----------------------------------------------------------------------------
1584 # Does much of the actual work for handle_source_transform.
1585 # Arguments are:
1586 # $VAR is the name of the variable that the source filenames come from
1587 # $TOPPARENT is the name of the _SOURCES variable which is being processed
1588 # $DERIVED is the name of resulting executable or library
1589 # $OBJ is the object extension (e.g., `$U.lo')
1590 # $FILE the source file to transform
1591 # %TRANSFORM contains extras arguments to pass to file_contents
1592 # when producing explicit rules
1593 # Result is a list of the names of objects
1594 # %linkers_used will be updated with any linkers needed
1595 sub handle_single_transform ($$$$$%)
1596 {
1597 my ($var, $topparent, $derived, $obj, $_file, %transform) = @_;
1598 my @files = ($_file);
1599 my @result = ();
1600 my $nonansi_obj = $obj;
1601 $nonansi_obj =~ s/\$U//g;
1603 # Turn sources into objects. We use a while loop like this
1604 # because we might add to @files in the loop.
1605 while (scalar @files > 0)
1606 {
1607 $_ = shift @files;
1609 # Configure substitutions in _SOURCES variables are errors.
1610 if (/^\@.*\@$/)
1611 {
1612 my $parent_msg = '';
1613 $parent_msg = "\nand is referred to from `$topparent'"
1614 if $topparent ne $var->name;
1615 err_var ($var,
1616 "`" . $var->name . "' includes configure substitution `$_'"
1617 . $parent_msg . ";\nconfigure " .
1618 "substitutions are not allowed in _SOURCES variables");
1619 next;
1620 }
1622 # If the source file is in a subdirectory then the `.o' is put
1623 # into the current directory, unless the subdir-objects option
1624 # is in effect.
1626 # Split file name into base and extension.
1627 next if ! /^(?:(.*)\/)?([^\/]*)($KNOWN_EXTENSIONS_PATTERN)$/;
1628 my $full = $_;
1629 my $directory = $1 || '';
1630 my $base = $2;
1631 my $extension = $3;
1633 # We must generate a rule for the object if it requires its own flags.
1634 my $renamed = 0;
1635 my ($linker, $object);
1637 # This records whether we've seen a derived source file (e.g.
1638 # yacc output).
1639 my $derived_source = 0;
1641 # This holds the `aggregate context' of the file we are
1642 # currently examining. If the file is compiled with
1643 # per-object flags, then it will be the name of the object.
1644 # Otherwise it will be `AM'. This is used by the target hook
1645 # language function.
1646 my $aggregate = 'AM';
1648 $extension = &derive_suffix ($extension, $nonansi_obj);
1649 my $lang;
1650 if ($extension_map{$extension} &&
1651 ($lang = $languages{$extension_map{$extension}}))
1652 {
1653 # Found the language, so see what it says.
1654 &saw_extension ($extension);
1656 # Do we have per-executable flags for this executable?
1657 my $have_per_exec_flags = 0;
1658 my @peflags = @{$lang->flags};
1659 push @peflags, 'LIBTOOLFLAGS' if $nonansi_obj eq '.lo';
1660 foreach my $flag (@peflags)
1661 {
1662 if (set_seen ("${derived}_$flag"))
1663 {
1664 $have_per_exec_flags = 1;
1665 last;
1666 }
1667 }
1669 # Note: computed subr call. The language rewrite function
1670 # should return one of the LANG_* constants. It could
1671 # also return a list whose first value is such a constant
1672 # and whose second value is a new source extension which
1673 # should be applied. This means this particular language
1674 # generates another source file which we must then process
1675 # further.
1676 my $subr = \&{'lang_' . $lang->name . '_rewrite'};
1677 my ($r, $source_extension)
1678 = &$subr ($directory, $base, $extension,
1679 $nonansi_obj, $have_per_exec_flags, $var);
1680 # Skip this entry if we were asked not to process it.
1681 next if $r == LANG_IGNORE;
1683 # Now extract linker and other info.
1684 $linker = $lang->linker;
1686 my $this_obj_ext;
1687 if (defined $source_extension)
1688 {
1689 $this_obj_ext = $source_extension;
1690 $derived_source = 1;
1691 }
1692 elsif ($lang->ansi)
1693 {
1694 $this_obj_ext = $obj;
1695 }
1696 else
1697 {
1698 $this_obj_ext = $nonansi_obj;
1699 }
1700 $object = $base . $this_obj_ext;
1702 if ($have_per_exec_flags)
1703 {
1704 # We have a per-executable flag in effect for this
1705 # object. In this case we rewrite the object's
1706 # name to ensure it is unique.
1708 # We choose the name `DERIVED_OBJECT' to ensure
1709 # (1) uniqueness, and (2) continuity between
1710 # invocations. However, this will result in a
1711 # name that is too long for losing systems, in
1712 # some situations. So we provide _SHORTNAME to
1713 # override.
1715 my $dname = $derived;
1716 my $var = var ($derived . '_SHORTNAME');
1717 if ($var)
1718 {
1719 # FIXME: should use the same Condition as
1720 # the _SOURCES variable. But this is really
1721 # silly overkill -- nobody should have
1722 # conditional shortnames.
1723 $dname = $var->variable_value;
1724 }
1725 $object = $dname . '-' . $object;
1727 prog_error ($lang->name . " flags defined without compiler")
1728 if ! defined $lang->compile;
1730 $renamed = 1;
1731 }
1733 # If rewrite said it was ok, put the object into a
1734 # subdir.
1735 if ($r == LANG_SUBDIR && $directory ne '')
1736 {
1737 $object = $directory . '/' . $object;
1738 }
1740 # If the object file has been renamed (because per-target
1741 # flags are used) we cannot compile the file with an
1742 # inference rule: we need an explicit rule.
1743 #
1744 # If the source is in a subdirectory and the object is in
1745 # the current directory, we also need an explicit rule.
1746 #
1747 # If both source and object files are in a subdirectory
1748 # (this happens when the subdir-objects option is used),
1749 # then the inference will work.
1750 #
1751 # The latter case deserves a historical note. When the
1752 # subdir-objects option was added on 1999-04-11 it was
1753 # thought that inferences rules would work for
1754 # subdirectory objects too. Later, on 1999-11-22,
1755 # automake was changed to output explicit rules even for
1756 # subdir-objects. Nobody remembers why, but this occurred
1757 # soon after the merge of the user-dep-gen-branch so it
1758 # might be related. In late 2003 people complained about
1759 # the size of the generated Makefile.ins (libgcj, with
1760 # 2200+ subdir objects was reported to have a 9MB
1761 # Makefile), so we now rely on inference rules again.
1762 # Maybe we'll run across the same issue as in the past,
1763 # but at least this time we can document it. However since
1764 # dependency tracking has evolved it is possible that
1765 # our old problem no longer exists.
1766 # Using inference rules for subdir-objects has been tested
1767 # with GNU make, Solaris make, Ultrix make, BSD make,
1768 # HP-UX make, and OSF1 make successfully.
1769 if ($renamed
1770 || ($directory ne '' && ! option 'subdir-objects')
1771 # We must also use specific rules for a nodist_ source
1772 # if its language requests it.
1773 || ($lang->nodist_specific && ! $transform{'DIST_SOURCE'}))
1774 {
1775 my $obj_sans_ext = substr ($object, 0,
1776 - length ($this_obj_ext));
1777 my $full_ansi = $full;
1778 if ($lang->ansi && option 'ansi2knr')
1779 {
1780 $full_ansi =~ s/$KNOWN_EXTENSIONS_PATTERN$/\$U$&/;
1781 $obj_sans_ext .= '$U';
1782 }
1784 my @specifics = ($full_ansi, $obj_sans_ext,
1785 # Only use $this_obj_ext in the derived
1786 # source case because in the other case we
1787 # *don't* want $(OBJEXT) to appear here.
1788 ($derived_source ? $this_obj_ext : '.o'),
1789 $extension);
1791 # If we renamed the object then we want to use the
1792 # per-executable flag name. But if this is simply a
1793 # subdir build then we still want to use the AM_ flag
1794 # name.
1795 if ($renamed)
1796 {
1797 unshift @specifics, $derived;
1798 $aggregate = $derived;
1799 }
1800 else
1801 {
1802 unshift @specifics, 'AM';
1803 }
1805 # Each item on this list is a reference to a list consisting
1806 # of four values followed by additional transform flags for
1807 # file_contents. The four values are the derived flag prefix
1808 # (e.g. for `foo_CFLAGS', it is `foo'), the name of the
1809 # source file, the base name of the output file, and
1810 # the extension for the object file.
1811 push (@{$lang_specific_files{$lang->name}},
1812 [@specifics, %transform]);
1813 }
1814 }
1815 elsif ($extension eq $nonansi_obj)
1816 {
1817 # This is probably the result of a direct suffix rule.
1818 # In this case we just accept the rewrite.
1819 $object = "$base$extension";
1820 $object = "$directory/$object" if $directory ne '';
1821 $linker = '';
1822 }
1823 else
1824 {
1825 # No error message here. Used to have one, but it was
1826 # very unpopular.
1827 # FIXME: we could potentially do more processing here,
1828 # perhaps treating the new extension as though it were a
1829 # new source extension (as above). This would require
1830 # more restructuring than is appropriate right now.
1831 next;
1832 }
1834 err_am "object `$object' created by `$full' and `$object_map{$object}'"
1835 if (defined $object_map{$object}
1836 && $object_map{$object} ne $full);
1838 my $comp_val = (($object =~ /\.lo$/)
1839 ? COMPILE_LIBTOOL : COMPILE_ORDINARY);
1840 (my $comp_obj = $object) =~ s/\.lo$/.\$(OBJEXT)/;
1841 if (defined $object_compilation_map{$comp_obj}
1842 && $object_compilation_map{$comp_obj} != 0
1843 # Only see the error once.
1844 && ($object_compilation_map{$comp_obj}
1845 != (COMPILE_LIBTOOL | COMPILE_ORDINARY))
1846 && $object_compilation_map{$comp_obj} != $comp_val)
1847 {
1848 err_am "object `$comp_obj' created both with libtool and without";
1849 }
1850 $object_compilation_map{$comp_obj} |= $comp_val;
1852 if (defined $lang)
1853 {
1854 # Let the language do some special magic if required.
1855 $lang->target_hook ($aggregate, $object, $full, %transform);
1856 }
1858 if ($derived_source)
1859 {
1860 prog_error ($lang->name . " has automatic dependency tracking")
1861 if $lang->autodep ne 'no';
1862 # Make sure this new source file is handled next. That will
1863 # make it appear to be at the right place in the list.
1864 unshift (@files, $object);
1865 # Distribute derived sources unless the source they are
1866 # derived from is not.
1867 &push_dist_common ($object)
1868 unless ($topparent =~ /^(?:nobase_)?nodist_/);
1869 next;
1870 }
1872 $linkers_used{$linker} = 1;
1874 push (@result, $object);
1876 if (! defined $object_map{$object})
1877 {
1878 my @dep_list = ();
1879 $object_map{$object} = $full;
1881 # If resulting object is in subdir, we need to make
1882 # sure the subdir exists at build time.
1883 if ($object =~ /\//)
1884 {
1885 # FIXME: check that $DIRECTORY is somewhere in the
1886 # project
1888 # For Java, the way we're handling it right now, a
1889 # `..' component doesn't make sense.
1890 if ($lang && $lang->name eq 'java' && $object =~ /(\/|^)\.\.\//)
1891 {
1892 err_am "`$full' should not contain a `..' component";
1893 }
1895 # Make sure object is removed by `make mostlyclean'.
1896 $compile_clean_files{$object} = MOSTLY_CLEAN;
1897 # If we have a libtool object then we also must remove
1898 # the ordinary .o.
1899 if ($object =~ /\.lo$/)
1900 {
1901 (my $xobj = $object) =~ s,lo$,\$(OBJEXT),;
1902 $compile_clean_files{$xobj} = MOSTLY_CLEAN;
1904 # Remove any libtool object in this directory.
1905 $libtool_clean_directories{$directory} = 1;
1906 }
1908 push (@dep_list, require_build_directory ($directory));
1910 # If we're generating dependencies, we also want
1911 # to make sure that the appropriate subdir of the
1912 # .deps directory is created.
1913 push (@dep_list,
1914 require_build_directory ($directory . '/$(DEPDIR)'))
1915 unless option 'no-dependencies';
1916 }
1918 &pretty_print_rule ($object . ':', "\t", @dep_list)
1919 if scalar @dep_list > 0;
1920 }
1922 # Transform .o or $o file into .P file (for automatic
1923 # dependency code).
1924 if ($lang && $lang->autodep ne 'no')
1925 {
1926 my $depfile = $object;
1927 $depfile =~ s/\.([^.]*)$/.P$1/;
1928 $depfile =~ s/\$\(OBJEXT\)$/o/;
1929 $dep_files{dirname ($depfile) . '/$(DEPDIR)/'
1930 . basename ($depfile)} = 1;
1931 }
1932 }
1934 return @result;
1935 }
1938 # $LINKER
1939 # define_objects_from_sources ($VAR, $OBJVAR, $NODEFINE, $ONE_FILE,
1940 # $OBJ, $PARENT, $TOPPARENT, $WHERE, %TRANSFORM)
1941 # ---------------------------------------------------------------------------
1942 # Define an _OBJECTS variable for a _SOURCES variable (or subvariable)
1943 #
1944 # Arguments are:
1945 # $VAR is the name of the _SOURCES variable
1946 # $OBJVAR is the name of the _OBJECTS variable if known (otherwise
1947 # it will be generated and returned).
1948 # $NODEFINE is a boolean: if true, $OBJVAR will not be defined (but
1949 # work done to determine the linker will be).
1950 # $ONE_FILE is the canonical (transformed) name of object to build
1951 # $OBJ is the object extension (i.e. either `.o' or `.lo').
1952 # $TOPPARENT is the _SOURCES variable being processed.
1953 # $WHERE context into which this definition is done
1954 # %TRANSFORM extra arguments to pass to file_contents when producing
1955 # rules
1956 #
1957 # Result is a pair ($LINKER, $OBJVAR):
1958 # $LINKER is a boolean, true if a linker is needed to deal with the objects
1959 sub define_objects_from_sources ($$$$$$$%)
1960 {
1961 my ($var, $objvar, $nodefine, $one_file,
1962 $obj, $topparent, $where, %transform) = @_;
1964 my $needlinker = "";
1966 transform_variable_recursively
1967 ($var, $objvar, 'am__objects', $nodefine, $where,
1968 # The transform code to run on each filename.
1969 sub {
1970 my ($subvar, $val, $cond, $full_cond) = @_;
1971 my @trans = handle_single_transform ($subvar, $topparent,
1972 $one_file, $obj, $val,
1973 %transform);
1974 $needlinker = "true" if @trans;
1975 return @trans;
1976 });
1978 return $needlinker;
1979 }
1982 # handle_source_transform ($CANON_TARGET, $TARGET, $OBJEXT, $WHERE, %TRANSFORM)
1983 # -----------------------------------------------------------------------------
1984 # Handle SOURCE->OBJECT transform for one program or library.
1985 # Arguments are:
1986 # canonical (transformed) name of target to build
1987 # actual target of object to build
1988 # object extension (i.e., either `.o' or `$o')
1989 # location of the source variable
1990 # extra arguments to pass to file_contents when producing rules
1991 # Return the name of the linker variable that must be used.
1992 # Empty return means just use `LINK'.
1993 sub handle_source_transform ($$$$%)
1994 {
1995 # one_file is canonical name. unxformed is given name. obj is
1996 # object extension.
1997 my ($one_file, $unxformed, $obj, $where, %transform) = @_;
1999 my $linker = '';
2001 # No point in continuing if _OBJECTS is defined.
2002 return if reject_var ($one_file . '_OBJECTS',
2003 $one_file . '_OBJECTS should not be defined');
2005 my %used_pfx = ();
2006 my $needlinker;
2007 %linkers_used = ();
2008 foreach my $prefix ('', 'EXTRA_', 'dist_', 'nodist_',
2009 'dist_EXTRA_', 'nodist_EXTRA_')
2010 {
2011 my $varname = $prefix . $one_file . "_SOURCES";
2012 my $var = var $varname;
2013 next unless $var;
2015 # We are going to define _OBJECTS variables using the prefix.
2016 # Then we glom them all together. So we can't use the null
2017 # prefix here as we need it later.
2018 my $xpfx = ($prefix eq '') ? 'am_' : $prefix;
2020 # Keep track of which prefixes we saw.
2021 $used_pfx{$xpfx} = 1
2022 unless $prefix =~ /EXTRA_/;
2024 push @sources, "\$($varname)";
2025 push @dist_sources, shadow_unconditionally ($varname, $where)
2026 unless (option ('no-dist') || $prefix =~ /^nodist_/);
2028 $needlinker |=
2029 define_objects_from_sources ($varname,
2030 $xpfx . $one_file . '_OBJECTS',
2031 $prefix =~ /EXTRA_/,
2032 $one_file, $obj, $varname, $where,
2033 DIST_SOURCE => ($prefix !~ /^nodist_/),
2034 %transform);
2035 }
2036 if ($needlinker)
2037 {
2038 $linker ||= &resolve_linker (%linkers_used);
2039 }
2041 my @keys = sort keys %used_pfx;
2042 if (scalar @keys == 0)
2043 {
2044 # The default source for libfoo.la is libfoo.c, but for
2045 # backward compatibility we first look at libfoo_la.c
2046 my $old_default_source = "$one_file.c";
2047 (my $default_source = $unxformed) =~ s,(\.[^./\\]*)?$,.c,;
2048 if ($old_default_source ne $default_source
2049 && (rule $old_default_source
2050 || rule '$(srcdir)/' . $old_default_source
2051 || rule '${srcdir}/' . $old_default_source
2052 || -f $old_default_source))
2053 {
2054 my $loc = $where->clone;
2055 $loc->pop_context;
2056 msg ('obsolete', $loc,
2057 "the default source for `$unxformed' has been changed "
2058 . "to `$default_source'.\n(Using `$old_default_source' for "
2059 . "backward compatibility.)");
2060 $default_source = $old_default_source;
2061 }
2062 # If a rule exists to build this source with a $(srcdir)
2063 # prefix, use that prefix in our variables too. This is for
2064 # the sake of BSD Make.
2065 if (rule '$(srcdir)/' . $default_source
2066 || rule '${srcdir}/' . $default_source)
2067 {
2068 $default_source = '$(srcdir)/' . $default_source;
2069 }
2071 &define_variable ($one_file . "_SOURCES", $default_source, $where);
2072 push (@sources, $default_source);
2073 push (@dist_sources, $default_source);
2075 %linkers_used = ();
2076 my (@result) =
2077 handle_single_transform ($one_file . '_SOURCES',
2078 $one_file . '_SOURCES',
2079 $one_file, $obj,
2080 $default_source, %transform);
2081 $linker ||= &resolve_linker (%linkers_used);
2082 define_pretty_variable ($one_file . '_OBJECTS', TRUE, $where, @result);
2083 }
2084 else
2085 {
2086 @keys = map { '$(' . $_ . $one_file . '_OBJECTS)' } @keys;
2087 define_pretty_variable ($one_file . '_OBJECTS', TRUE, $where, @keys);
2088 }
2090 # If we want to use `LINK' we must make sure it is defined.
2091 if ($linker eq '')
2092 {
2093 $need_link = 1;
2094 }
2096 return $linker;
2097 }
2100 # handle_lib_objects ($XNAME, $VAR)
2101 # ---------------------------------
2102 # Special-case ALLOCA and LIBOBJS substitutions in _LDADD or _LIBADD variables.
2103 # Also, generate _DEPENDENCIES variable if appropriate.
2104 # Arguments are:
2105 # transformed name of object being built, or empty string if no object
2106 # name of _LDADD/_LIBADD-type variable to examine
2107 # Returns 1 if LIBOBJS seen, 0 otherwise.
2108 sub handle_lib_objects
2109 {
2110 my ($xname, $varname) = @_;
2112 my $var = var ($varname);
2113 prog_error "handle_lib_objects: `$varname' undefined"
2114 unless $var;
2115 prog_error "handle_lib_objects: unexpected variable name `$varname'"
2116 unless $varname =~ /^(.*)(?:LIB|LD)ADD$/;
2117 my $prefix = $1 || 'AM_';
2119 my $seen_libobjs = 0;
2120 my $flagvar = 0;
2122 transform_variable_recursively
2123 ($varname, $xname . '_DEPENDENCIES', 'am__DEPENDENCIES',
2124 ! $xname, INTERNAL,
2125 # Transformation function, run on each filename.
2126 sub {
2127 my ($subvar, $val, $cond, $full_cond) = @_;
2129 if ($val =~ /^-/)
2130 {
2131 # Skip -lfoo and -Ldir silently; these are explicitly allowed.
2132 if ($val !~ /^-[lL]/ &&
2133 # Skip -dlopen and -dlpreopen; these are explicitly allowed
2134 # for Libtool libraries or programs. (Actually we are a bit
2135 # laxe here since this code also applies to non-libtool
2136 # libraries or programs, for which -dlopen and -dlopreopen
2137 # are pure nonsense. Diagnosing this doesn't seem very
2138 # important: the developer will quickly get complaints from
2139 # the linker.)
2140 $val !~ /^-dl(?:pre)?open$/ &&
2141 # Only get this error once.
2142 ! $flagvar)
2143 {
2144 $flagvar = 1;
2145 # FIXME: should display a stack of nested variables
2146 # as context when $var != $subvar.
2147 err_var ($var, "linker flags such as `$val' belong in "
2148 . "`${prefix}LDFLAGS");
2149 }
2150 return ();
2151 }
2152 elsif ($val !~ /^\@.*\@$/)
2153 {
2154 # Assume we have a file of some sort, and output it into the
2155 # dependency variable. Autoconf substitutions are not output;
2156 # rarely is a new dependency substituted into e.g. foo_LDADD
2157 # -- but bad things (e.g. -lX11) are routinely substituted.
2158 # Note that LIBOBJS and ALLOCA are exceptions to this rule,
2159 # and handled specially below.
2160 return $val;
2161 }
2162 elsif ($val =~ /^\@(LT)?LIBOBJS\@$/)
2163 {
2164 handle_LIBOBJS ($subvar, $cond, $1);
2165 $seen_libobjs = 1;
2166 return $val;
2167 }
2168 elsif ($val =~ /^\@(LT)?ALLOCA\@$/)
2169 {
2170 handle_ALLOCA ($subvar, $cond, $1);
2171 return $val;
2172 }
2173 else
2174 {
2175 return ();
2176 }
2177 });
2179 return $seen_libobjs;
2180 }
2182 # handle_LIBOBJS_or_ALLOCA ($VAR)
2183 # -------------------------------
2184 # Definitions common to LIBOBJS and ALLOCA.
2185 # VAR should be one of LIBOBJS, LTLIBOBJS, ALLOCA, or LTALLOCA.
2186 sub handle_LIBOBJS_or_ALLOCA ($)
2187 {
2188 my ($var) = @_;
2190 my $dir = '';
2192 # If LIBOBJS files must be built in another directory we have
2193 # to define LIBOBJDIR and ensure the files get cleaned.
2194 # Otherwise LIBOBJDIR can be left undefined, and the cleaning
2195 # is achieved by `rm -f *.$(OBJEXT)' in compile.am.
2196 if ($config_libobj_dir
2197 && $relative_dir ne $config_libobj_dir)
2198 {
2199 if (option 'subdir-objects')
2200 {
2201 # In the top-level Makefile we do not use $(top_builddir), because
2202 # we are already there, and since the targets are built without
2203 # a $(top_builddir), it helps BSD Make to match them with
2204 # dependencies.
2205 $dir = "$config_libobj_dir/" if $config_libobj_dir ne '.';
2206 $dir = "$topsrcdir/$dir" if $relative_dir ne '.';
2207 define_variable ('LIBOBJDIR', "$dir", INTERNAL);
2208 $clean_files{"\$($var)"} = MOSTLY_CLEAN;
2209 # If LTLIBOBJS is used, we must also clear LIBOBJS (which might
2210 # be created by libtool as a side-effect of creating LTLIBOBJS).
2211 $clean_files{"\$($var)"} = MOSTLY_CLEAN if $var =~ s/^LT//;
2212 }
2213 else
2214 {
2215 error ("`\$($var)' cannot be used outside `$config_libobj_dir' if"
2216 . " `subdir-objects' is not set");
2217 }
2218 }
2220 return $dir;
2221 }
2223 sub handle_LIBOBJS ($$$)
2224 {
2225 my ($var, $cond, $lt) = @_;
2226 my $myobjext = $lt ? 'lo' : 'o';
2227 $lt ||= '';
2229 $var->requires_variables ("\@${lt}LIBOBJS\@ used", $lt . 'LIBOBJS')
2230 if ! keys %libsources;
2232 my $dir = handle_LIBOBJS_or_ALLOCA "${lt}LIBOBJS";
2234 foreach my $iter (keys %libsources)
2235 {
2236 if ($iter =~ /\.[cly]$/)
2237 {
2238 &saw_extension ($&);
2239 &saw_extension ('.c');
2240 }
2242 if ($iter =~ /\.h$/)
2243 {
2244 require_libsource_with_macro ($cond, $var, FOREIGN, $iter);
2245 }
2246 elsif ($iter ne 'alloca.c')
2247 {
2248 my $rewrite = $iter;
2249 $rewrite =~ s/\.c$/.P$myobjext/;
2250 $dep_files{$dir . '$(DEPDIR)/' . $rewrite} = 1;
2251 $rewrite = "^" . quotemeta ($iter) . "\$";
2252 # Only require the file if it is not a built source.
2253 my $bs = var ('BUILT_SOURCES');
2254 if (! $bs || ! grep (/$rewrite/, $bs->value_as_list_recursive))
2255 {
2256 require_libsource_with_macro ($cond, $var, FOREIGN, $iter);
2257 }
2258 }
2259 }
2260 }
2262 sub handle_ALLOCA ($$$)
2263 {
2264 my ($var, $cond, $lt) = @_;
2265 my $myobjext = $lt ? 'lo' : 'o';
2266 $lt ||= '';
2267 my $dir = handle_LIBOBJS_or_ALLOCA "${lt}ALLOCA";
2269 $var->requires_variables ("\@${lt}ALLOCA\@ used", $lt . 'ALLOCA');
2270 $dep_files{$dir . '$(DEPDIR)/alloca.P' . $myobjext} = 1;
2271 require_libsource_with_macro ($cond, $var, FOREIGN, 'alloca.c');
2272 &saw_extension ('.c');
2273 }
2275 # Canonicalize the input parameter
2276 sub canonicalize
2277 {
2278 my ($string) = @_;
2279 $string =~ tr/A-Za-z0-9_\@/_/c;
2280 return $string;
2281 }
2283 # Canonicalize a name, and check to make sure the non-canonical name
2284 # is never used. Returns canonical name. Arguments are name and a
2285 # list of suffixes to check for.
2286 sub check_canonical_spelling
2287 {
2288 my ($name, @suffixes) = @_;
2290 my $xname = &canonicalize ($name);
2291 if ($xname ne $name)
2292 {
2293 foreach my $xt (@suffixes)
2294 {
2295 reject_var ("$name$xt", "use `$xname$xt', not `$name$xt'");
2296 }
2297 }
2299 return $xname;
2300 }
2303 # handle_compile ()
2304 # -----------------
2305 # Set up the compile suite.
2306 sub handle_compile ()
2307 {
2308 return
2309 unless $get_object_extension_was_run;
2311 # Boilerplate.
2312 my $default_includes = '';
2313 if (! option 'nostdinc')
2314 {
2315 my @incs = ('-I.', subst ('am__isrc'));
2317 my $var = var 'CONFIG_HEADER';
2318 if ($var)
2319 {
2320 foreach my $hdr (split (' ', $var->variable_value))
2321 {
2322 push @incs, '-I' . dirname ($hdr);
2323 }
2324 }
2325 # We want `-I. -I$(srcdir)', but the latter -I is redundant
2326 # and unaesthetic in non-VPATH builds. We use `-I.@am__isrc@`
2327 # instead. It will be replaced by '-I.' or '-I. -I$(srcdir)'.
2328 # Items in CONFIG_HEADER are never in $(srcdir) so it is safe
2329 # to just put @am__isrc@ right after `-I.', without a space.
2330 ($default_includes = ' ' . uniq (@incs)) =~ s/ @/@/;
2331 }
2333 my (@mostly_rms, @dist_rms);
2334 foreach my $item (sort keys %compile_clean_files)
2335 {
2336 if ($compile_clean_files{$item} == MOSTLY_CLEAN)
2337 {
2338 push (@mostly_rms, "\t-rm -f $item");
2339 }
2340 elsif ($compile_clean_files{$item} == DIST_CLEAN)
2341 {
2342 push (@dist_rms, "\t-rm -f $item");
2343 }
2344 else
2345 {
2346 prog_error 'invalid entry in %compile_clean_files';
2347 }
2348 }
2350 my ($coms, $vars, $rules) =
2351 &file_contents_internal (1, "$libdir/am/compile.am",
2352 new Automake::Location,
2353 ('DEFAULT_INCLUDES' => $default_includes,
2354 'MOSTLYRMS' => join ("\n", @mostly_rms),
2355 'DISTRMS' => join ("\n", @dist_rms)));
2356 $output_vars .= $vars;
2357 $output_rules .= "$coms$rules";
2359 # Check for automatic de-ANSI-fication.
2360 if (option 'ansi2knr')
2361 {
2362 my ($ansi2knr_filename, $ansi2knr_where) = @{option 'ansi2knr'};
2363 my $ansi2knr_dir = '';
2365 require_variables ($ansi2knr_where, "option `ansi2knr' is used",
2366 TRUE, "ANSI2KNR", "U");
2368 # topdir is where ansi2knr should be.
2369 if ($ansi2knr_filename eq 'ansi2knr')
2370 {
2371 # Only require ansi2knr files if they should appear in
2372 # this directory.
2373 require_file ($ansi2knr_where, FOREIGN,
2374 'ansi2knr.c', 'ansi2knr.1');
2376 # ansi2knr needs to be built before subdirs, so unshift it.
2377 unshift (@all, '$(ANSI2KNR)');
2378 }
2379 else
2380 {
2381 $ansi2knr_dir = dirname ($ansi2knr_filename);
2382 }
2384 $output_rules .= &file_contents ('ansi2knr',
2385 new Automake::Location,
2386 'ANSI2KNR-DIR' => $ansi2knr_dir);
2388 }
2389 }
2391 # handle_libtool ()
2392 # -----------------
2393 # Handle libtool rules.
2394 sub handle_libtool
2395 {
2396 return unless var ('LIBTOOL');
2398 # Libtool requires some files, but only at top level.
2399 # (Starting with Libtool 2.0 we do not have to bother. These
2400 # requirements are done with AC_REQUIRE_AUX_FILE.)
2401 require_conf_file_with_macro (TRUE, 'LIBTOOL', FOREIGN, @libtool_files)
2402 if $relative_dir eq '.' && ! $libtool_new_api;
2404 my @libtool_rms;
2405 foreach my $item (sort keys %libtool_clean_directories)
2406 {
2407 my $dir = ($item eq '.') ? '' : "$item/";
2408 # .libs is for Unix, _libs for DOS.
2409 push (@libtool_rms, "\t-rm -rf ${dir}.libs ${dir}_libs");
2410 }
2412 check_user_variables 'LIBTOOLFLAGS';
2414 # Output the libtool compilation rules.
2415 $output_rules .= &file_contents ('libtool',
2416 new Automake::Location,
2417 LTRMS => join ("\n", @libtool_rms));
2418 }
2420 # handle_programs ()
2421 # ------------------
2422 # Handle C programs.
2423 sub handle_programs
2424 {
2425 my @proglist = &am_install_var ('progs', 'PROGRAMS',
2426 'bin', 'sbin', 'libexec', 'pkglib',
2427 'noinst', 'check');
2428 return if ! @proglist;
2430 my $seen_global_libobjs =
2431 var ('LDADD') && &handle_lib_objects ('', 'LDADD');
2433 foreach my $pair (@proglist)
2434 {
2435 my ($where, $one_file) = @$pair;
2437 my $seen_libobjs = 0;
2438 my $obj = get_object_extension '.$(OBJEXT)';
2440 # Strip any $(EXEEXT) suffix the user might have added, or this
2441 # will confuse &handle_source_transform and &check_canonical_spelling.
2442 # We'll add $(EXEEXT) back later anyway.
2443 $one_file =~ s/\$\(EXEEXT\)$//;
2445 $known_programs{$one_file} = $where;
2447 # Canonicalize names and check for misspellings.
2448 my $xname = &check_canonical_spelling ($one_file, '_LDADD', '_LDFLAGS',
2449 '_SOURCES', '_OBJECTS',
2450 '_DEPENDENCIES');
2452 $where->push_context ("while processing program `$one_file'");
2453 $where->set (INTERNAL->get);
2455 my $linker = &handle_source_transform ($xname, $one_file, $obj, $where,
2456 NONLIBTOOL => 1, LIBTOOL => 0);
2458 if (var ($xname . "_LDADD"))
2459 {
2460 $seen_libobjs = &handle_lib_objects ($xname, $xname . '_LDADD');
2461 }
2462 else
2463 {
2464 # User didn't define prog_LDADD override. So do it.
2465 &define_variable ($xname . '_LDADD', '$(LDADD)', $where);
2467 # This does a bit too much work. But we need it to
2468 # generate _DEPENDENCIES when appropriate.
2469 if (var ('LDADD'))
2470 {
2471 $seen_libobjs = &handle_lib_objects ($xname, 'LDADD');
2472 }
2473 }
2475 reject_var ($xname . '_LIBADD',
2476 "use `${xname}_LDADD', not `${xname}_LIBADD'");
2478 set_seen ($xname . '_DEPENDENCIES');
2479 set_seen ($xname . '_LDFLAGS');
2481 # Determine program to use for link.
2482 my $xlink = &define_per_target_linker_variable ($linker, $xname);
2484 # If the resulting program lies into a subdirectory,
2485 # make sure this directory will exist.
2486 my $dirstamp = require_build_directory_maybe ($one_file);
2488 $libtool_clean_directories{dirname ($one_file)} = 1;
2490 $output_rules .= &file_contents ('program',
2491 $where,
2492 PROGRAM => $one_file,
2493 XPROGRAM => $xname,
2494 XLINK => $xlink,
2495 DIRSTAMP => $dirstamp,
2496 EXEEXT => '$(EXEEXT)');
2498 if ($seen_libobjs || $seen_global_libobjs)
2499 {
2500 if (var ($xname . '_LDADD'))
2501 {
2502 &check_libobjs_sources ($xname, $xname . '_LDADD');
2503 }
2504 elsif (var ('LDADD'))
2505 {
2506 &check_libobjs_sources ($xname, 'LDADD');
2507 }
2508 }
2509 }
2510 }
2513 # handle_libraries ()
2514 # -------------------
2515 # Handle libraries.
2516 sub handle_libraries
2517 {
2518 my @liblist = &am_install_var ('libs', 'LIBRARIES',
2519 'lib', 'pkglib', 'noinst', 'check');
2520 return if ! @liblist;
2522 my @prefix = am_primary_prefixes ('LIBRARIES', 0, 'lib', 'pkglib',
2523 'noinst', 'check');
2525 if (@prefix)
2526 {
2527 my $var = rvar ($prefix[0] . '_LIBRARIES');
2528 $var->requires_variables ('library used', 'RANLIB');
2529 }
2531 &define_variable ('AR', 'ar', INTERNAL);
2532 &define_variable ('ARFLAGS', 'cru', INTERNAL);
2534 foreach my $pair (@liblist)
2535 {
2536 my ($where, $onelib) = @$pair;
2538 my $seen_libobjs = 0;
2539 # Check that the library fits the standard naming convention.
2540 my $bn = basename ($onelib);
2541 if ($bn !~ /^lib.*\.a$/)
2542 {
2543 $bn =~ s/^(?:lib)?(.*?)(?:\.[^.]*)?$/lib$1.a/;
2544 my $suggestion = dirname ($onelib) . "/$bn";
2545 $suggestion =~ s|^\./||g;
2546 msg ('error-gnu/warn', $where,
2547 "`$onelib' is not a standard library name\n"
2548 . "did you mean `$suggestion'?")
2549 }
2551 $where->push_context ("while processing library `$onelib'");
2552 $where->set (INTERNAL->get);
2554 my $obj = get_object_extension '.$(OBJEXT)';
2556 # Canonicalize names and check for misspellings.
2557 my $xlib = &check_canonical_spelling ($onelib, '_LIBADD', '_SOURCES',
2558 '_OBJECTS', '_DEPENDENCIES',
2559 '_AR');
2561 if (! var ($xlib . '_AR'))
2562 {
2563 &define_variable ($xlib . '_AR', '$(AR) $(ARFLAGS)', $where);
2564 }
2566 # Generate support for conditional object inclusion in
2567 # libraries.
2568 if (var ($xlib . '_LIBADD'))
2569 {
2570 if (&handle_lib_objects ($xlib, $xlib . '_LIBADD'))
2571 {
2572 $seen_libobjs = 1;
2573 }
2574 }
2575 else
2576 {
2577 &define_variable ($xlib . "_LIBADD", '', $where);
2578 }
2580 reject_var ($xlib . '_LDADD',
2581 "use `${xlib}_LIBADD', not `${xlib}_LDADD'");
2583 # Make sure we at look at this.
2584 set_seen ($xlib . '_DEPENDENCIES');
2586 &handle_source_transform ($xlib, $onelib, $obj, $where,
2587 NONLIBTOOL => 1, LIBTOOL => 0);
2589 # If the resulting library lies into a subdirectory,
2590 # make sure this directory will exist.
2591 my $dirstamp = require_build_directory_maybe ($onelib);
2593 $output_rules .= &file_contents ('library',
2594 $where,
2595 LIBRARY => $onelib,
2596 XLIBRARY => $xlib,
2597 DIRSTAMP => $dirstamp);
2599 if ($seen_libobjs)
2600 {
2601 if (var ($xlib . '_LIBADD'))
2602 {
2603 &check_libobjs_sources ($xlib, $xlib . '_LIBADD');
2604 }
2605 }
2606 }
2607 }
2610 # handle_ltlibraries ()
2611 # ---------------------
2612 # Handle shared libraries.
2613 sub handle_ltlibraries
2614 {
2615 my @liblist = &am_install_var ('ltlib', 'LTLIBRARIES',
2616 'noinst', 'lib', 'pkglib', 'check');
2617 return if ! @liblist;
2619 my @prefix = am_primary_prefixes ('LTLIBRARIES', 0, 'lib', 'pkglib',
2620 'noinst', 'check');
2622 if (@prefix)
2623 {
2624 my $var = rvar ($prefix[0] . '_LTLIBRARIES');
2625 $var->requires_variables ('Libtool library used', 'LIBTOOL');
2626 }
2628 my %instdirs = ();
2629 my %instconds = ();
2630 my %liblocations = (); # Location (in Makefile.am) of each library.
2632 foreach my $key (@prefix)
2633 {
2634 # Get the installation directory of each library.
2635 (my $dir = $key) =~ s/^nobase_//;
2636 my $var = rvar ($key . '_LTLIBRARIES');
2638 # We reject libraries which are installed in several places
2639 # in the same condition, because we can only specify one
2640 # `-rpath' option.
2641 $var->traverse_recursively
2642 (sub
2643 {
2644 my ($var, $val, $cond, $full_cond) = @_;
2645 my $hcond = $full_cond->human;
2646 my $where = $var->rdef ($cond)->location;
2647 # A library cannot be installed in different directory
2648 # in overlapping conditions.
2649 if (exists $instconds{$val})
2650 {
2651 my ($msg, $acond) =
2652 $instconds{$val}->ambiguous_p ($val, $full_cond);
2654 if ($msg)
2655 {
2656 error ($where, $msg, partial => 1);
2658 my $dirtxt = "installed in `$dir'";
2659 $dirtxt = "built for `$dir'"
2660 if $dir eq 'EXTRA' || $dir eq 'noinst' || $dir eq 'check';
2661 my $dircond =
2662 $full_cond->true ? "" : " in condition $hcond";
2664 error ($where, "`$val' should be $dirtxt$dircond ...",
2665 partial => 1);
2667 my $hacond = $acond->human;
2668 my $adir = $instdirs{$val}{$acond};
2669 my $adirtxt = "installed in `$adir'";
2670 $adirtxt = "built for `$adir'"
2671 if ($adir eq 'EXTRA' || $adir eq 'noinst'
2672 || $adir eq 'check');
2673 my $adircond = $acond->true ? "" : " in condition $hacond";
2675 my $onlyone = ($dir ne $adir) ?
2676 ("\nLibtool libraries can be built for only one "
2677 . "destination.") : "";
2679 error ($liblocations{$val}{$acond},
2680 "... and should also be $adirtxt$adircond.$onlyone");
2681 return;
2682 }
2683 }
2684 else
2685 {
2686 $instconds{$val} = new Automake::DisjConditions;
2687 }
2688 $instdirs{$val}{$full_cond} = $dir;
2689 $liblocations{$val}{$full_cond} = $where;
2690 $instconds{$val} = $instconds{$val}->merge ($full_cond);
2691 },
2692 sub
2693 {
2694 return ();
2695 },
2696 skip_ac_subst => 1);
2697 }
2699 foreach my $pair (@liblist)
2700 {
2701 my ($where, $onelib) = @$pair;
2703 my $seen_libobjs = 0;
2704 my $obj = get_object_extension '.lo';
2706 # Canonicalize names and check for misspellings.
2707 my $xlib = &check_canonical_spelling ($onelib, '_LIBADD', '_LDFLAGS',
2708 '_SOURCES', '_OBJECTS',
2709 '_DEPENDENCIES');
2711 # Check that the library fits the standard naming convention.
2712 my $libname_rx = '^lib.*\.la';
2713 my $ldvar = var ("${xlib}_LDFLAGS") || var ('AM_LDFLAGS');
2714 my $ldvar2 = var ('LDFLAGS');
2715 if (($ldvar && grep (/-module/, $ldvar->value_as_list_recursive))
2716 || ($ldvar2 && grep (/-module/, $ldvar2->value_as_list_recursive)))
2717 {
2718 # Relax name checking for libtool modules.
2719 $libname_rx = '\.la';
2720 }
2722 my $bn = basename ($onelib);
2723 if ($bn !~ /$libname_rx$/)
2724 {
2725 my $type = 'library';
2726 if ($libname_rx eq '\.la')
2727 {
2728 $bn =~ s/^(lib|)(.*?)(?:\.[^.]*)?$/$1$2.la/;
2729 $type = 'module';
2730 }
2731 else
2732 {
2733 $bn =~ s/^(?:lib)?(.*?)(?:\.[^.]*)?$/lib$1.la/;
2734 }
2735 my $suggestion = dirname ($onelib) . "/$bn";
2736 $suggestion =~ s|^\./||g;
2737 msg ('error-gnu/warn', $where,
2738 "`$onelib' is not a standard libtool $type name\n"
2739 . "did you mean `$suggestion'?")
2740 }
2742 $where->push_context ("while processing Libtool library `$onelib'");
2743 $where->set (INTERNAL->get);
2745 # Make sure we look at these.
2746 set_seen ($xlib . '_LDFLAGS');
2747 set_seen ($xlib . '_DEPENDENCIES');
2749 # Generate support for conditional object inclusion in
2750 # libraries.
2751 if (var ($xlib . '_LIBADD'))
2752 {
2753 if (&handle_lib_objects ($xlib, $xlib . '_LIBADD'))
2754 {
2755 $seen_libobjs = 1;
2756 }
2757 }
2758 else
2759 {
2760 &define_variable ($xlib . "_LIBADD", '', $where);
2761 }
2763 reject_var ("${xlib}_LDADD",
2764 "use `${xlib}_LIBADD', not `${xlib}_LDADD'");
2767 my $linker = &handle_source_transform ($xlib, $onelib, $obj, $where,
2768 NONLIBTOOL => 0, LIBTOOL => 1);
2770 # Determine program to use for link.
2771 my $xlink = &define_per_target_linker_variable ($linker, $xlib);
2773 my $rpathvar = "am_${xlib}_rpath";
2774 my $rpath = "\$($rpathvar)";
2775 foreach my $rcond ($instconds{$onelib}->conds)
2776 {
2777 my $val;
2778 if ($instdirs{$onelib}{$rcond} eq 'EXTRA'
2779 || $instdirs{$onelib}{$rcond} eq 'noinst'
2780 || $instdirs{$onelib}{$rcond} eq 'check')
2781 {
2782 # It's an EXTRA_ library, so we can't specify -rpath,
2783 # because we don't know where the library will end up.
2784 # The user probably knows, but generally speaking automake
2785 # doesn't -- and in fact configure could decide
2786 # dynamically between two different locations.
2787 $val = '';
2788 }
2789 else
2790 {
2791 $val = ('-rpath $(' . $instdirs{$onelib}{$rcond} . 'dir)');
2792 }
2793 if ($rcond->true)
2794 {
2795 # If $rcond is true there is only one condition and
2796 # there is no point defining an helper variable.
2797 $rpath = $val;
2798 }
2799 else
2800 {
2801 define_pretty_variable ($rpathvar, $rcond, INTERNAL, $val);
2802 }
2803 }
2805 # If the resulting library lies into a subdirectory,
2806 # make sure this directory will exist.
2807 my $dirstamp = require_build_directory_maybe ($onelib);
2809 # Remember to cleanup .libs/ in this directory.
2810 my $dirname = dirname $onelib;
2811 $libtool_clean_directories{$dirname} = 1;
2813 $output_rules .= &file_contents ('ltlibrary',
2814 $where,
2815 LTLIBRARY => $onelib,
2816 XLTLIBRARY => $xlib,
2817 RPATH => $rpath,
2818 XLINK => $xlink,
2819 DIRSTAMP => $dirstamp);
2820 if ($seen_libobjs)
2821 {
2822 if (var ($xlib . '_LIBADD'))
2823 {
2824 &check_libobjs_sources ($xlib, $xlib . '_LIBADD');
2825 }
2826 }
2827 }
2828 }
2830 # See if any _SOURCES variable were misspelled.
2831 sub check_typos ()
2832 {
2833 # It is ok if the user sets this particular variable.
2834 set_seen 'AM_LDFLAGS';
2836 foreach my $primary ('SOURCES', 'LIBADD', 'LDADD', 'LDFLAGS', 'DEPENDENCIES')
2837 {
2838 foreach my $var (variables $primary)
2839 {
2840 my $varname = $var->name;
2841 # A configure variable is always legitimate.
2842 next if exists $configure_vars{$varname};
2844 for my $cond ($var->conditions->conds)
2845 {
2846 $varname =~ /^(?:nobase_)?(?:dist_|nodist_)?(.*)_[[:alnum:]]+$/;
2847 msg_var ('syntax', $var, "variable `$varname' is defined but no"
2848 . " program or\nlibrary has `$1' as canonic name"
2849 . " (possible typo)")
2850 unless $var->rdef ($cond)->seen;
2851 }
2852 }
2853 }
2854 }
2857 # Handle scripts.
2858 sub handle_scripts
2859 {
2860 # NOTE we no longer automatically clean SCRIPTS, because it is
2861 # useful to sometimes distribute scripts verbatim. This happens
2862 # e.g. in Automake itself.
2863 &am_install_var ('-candist', 'scripts', 'SCRIPTS',
2864 'bin', 'sbin', 'libexec', 'pkgdata',
2865 'noinst', 'check');
2866 }
2871 ## ------------------------ ##
2872 ## Handling Texinfo files. ##
2873 ## ------------------------ ##
2875 # ($OUTFILE, $VFILE, @CLEAN_FILES)
2876 # &scan_texinfo_file ($FILENAME)
2877 # ------------------------------
2878 # $OUTFILE - name of the info file produced by $FILENAME.
2879 # $VFILE - name of the version.texi file used (undef if none).
2880 # @CLEAN_FILES - list of byproducts (indexes etc.)
2881 sub scan_texinfo_file ($)
2882 {
2883 my ($filename) = @_;
2885 # Some of the following extensions are always created, no matter
2886 # whether indexes are used or not. Other (like cps, fns, ... pgs)
2887 # are only created when they are used. We used to scan $FILENAME
2888 # for their use, but that is not enough: they could be used in
2889 # included files. We can't scan included files because we don't
2890 # know the include path. Therefore we always erase these files, no
2891 # matter whether they are used or not.
2892 #
2893 # (tmp is only created if an @macro is used and a certain e-TeX
2894 # feature is not available.)
2895 my %clean_suffixes =
2896 map { $_ => 1 } (qw(aux log toc tmp
2897 cp cps
2898 fn fns
2899 ky kys
2900 vr vrs
2901 tp tps
2902 pg pgs)); # grep 'new.*index' texinfo.tex
2904 my $texi = new Automake::XFile "< $filename";
2905 verb "reading $filename";
2907 my ($outfile, $vfile);
2908 while ($_ = $texi->getline)
2909 {
2910 if (/^\@setfilename +(\S+)/)
2911 {
2912 # Honor only the first @setfilename. (It's possible to have
2913 # more occurrences later if the manual shows examples of how
2914 # to use @setfilename...)
2915 next if $outfile;
2917 $outfile = $1;
2918 if ($outfile =~ /\.([^.]+)$/ && $1 ne 'info')
2919 {
2920 error ("$filename:$.",
2921 "output `$outfile' has unrecognized extension");
2922 return;
2923 }
2924 }
2925 # A "version.texi" file is actually any file whose name matches
2926 # "vers*.texi".
2927 elsif (/^\@include\s+(vers[^.]*\.texi)\s*$/)
2928 {
2929 $vfile = $1;
2930 }
2932 # Try to find new or unused indexes.
2934 # Creating a new category of index.
2935 elsif (/^\@def(code)?index (\w+)/)
2936 {
2937 $clean_suffixes{$2} = 1;
2938 $clean_suffixes{"$2s"} = 1;
2939 }
2941 # Merging an index into an another.
2942 elsif (/^\@syn(code)?index (\w+) (\w+)/)
2943 {
2944 delete $clean_suffixes{"$2s"};
2945 $clean_suffixes{"$3s"} = 1;
2946 }
2948 }
2950 if (! $outfile)
2951 {
2952 err_am "`$filename' missing \@setfilename";
2953 return;
2954 }
2956 my $infobase = basename ($filename);
2957 $infobase =~ s/\.te?xi(nfo)?$//;
2958 return ($outfile, $vfile,
2959 map { "$infobase.$_" } (sort keys %clean_suffixes));
2960 }
2963 # ($DIRSTAMP, @CLEAN_FILES)
2964 # output_texinfo_build_rules ($SOURCE, $DEST, $INSRC, @DEPENDENCIES)
2965 # ------------------------------------------------------------------
2966 # SOURCE - the source Texinfo file
2967 # DEST - the destination Info file
2968 # INSRC - wether DEST should be built in the source tree
2969 # DEPENDENCIES - known dependencies
2970 sub output_texinfo_build_rules ($$$@)
2971 {
2972 my ($source, $dest, $insrc, @deps) = @_;
2974 # Split `a.texi' into `a' and `.texi'.
2975 my ($spfx, $ssfx) = ($source =~ /^(.*?)(\.[^.]*)?$/);
2976 my ($dpfx, $dsfx) = ($dest =~ /^(.*?)(\.[^.]*)?$/);
2978 $ssfx ||= "";
2979 $dsfx ||= "";
2981 # We can output two kinds of rules: the "generic" rules use Make
2982 # suffix rules and are appropriate when $source and $dest do not lie
2983 # in a sub-directory; the "specific" rules are needed in the other
2984 # case.
2985 #
2986 # The former are output only once (this is not really apparent here,
2987 # but just remember that some logic deeper in Automake will not
2988 # output the same rule twice); while the later need to be output for
2989 # each Texinfo source.
2990 my $generic;
2991 my $makeinfoflags;
2992 my $sdir = dirname $source;
2993 if ($sdir eq '.' && dirname ($dest) eq '.')
2994 {
2995 $generic = 1;
2996 $makeinfoflags = '-I $(srcdir)';
2997 }
2998 else
2999 {
3000 $generic = 0;
3001 $makeinfoflags = "-I $sdir -I \$(srcdir)/$sdir";
3002 }
3004 # A directory can contain two kinds of info files: some built in the
3005 # source tree, and some built in the build tree. The rules are
3006 # different in each case. However we cannot output two different
3007 # set of generic rules. Because in-source builds are more usual, we
3008 # use generic rules in this case and fall back to "specific" rules
3009 # for build-dir builds. (It should not be a problem to invert this
3010 # if needed.)
3011 $generic = 0 unless $insrc;
3013 # We cannot use a suffix rule to build info files with an empty
3014 # extension. Otherwise we would output a single suffix inference
3015 # rule, with separate dependencies, as in
3016 #
3017 # .texi:
3018 # $(MAKEINFO) ...
3019 # foo.info: foo.texi
3020 #
3021 # which confuse Solaris make. (See the Autoconf manual for
3022 # details.) Therefore we use a specific rule in this case. This
3023 # applies to info files only (dvi and pdf files always have an
3024 # extension).
3025 my $generic_info = ($generic && $dsfx) ? 1 : 0;
3027 # If the resulting file lie into a subdirectory,
3028 # make sure this directory will exist.
3029 my $dirstamp = require_build_directory_maybe ($dest);
3031 my $dipfx = ($insrc ? '$(srcdir)/' : '') . $dpfx;
3033 $output_rules .= file_contents ('texibuild',
3034 new Automake::Location,
3035 DEPS => "@deps",
3036 DEST_PREFIX => $dpfx,
3037 DEST_INFO_PREFIX => $dipfx,
3038 DEST_SUFFIX => $dsfx,
3039 DIRSTAMP => $dirstamp,
3040 GENERIC => $generic,
3041 GENERIC_INFO => $generic_info,
3042 INSRC => $insrc,
3043 MAKEINFOFLAGS => $makeinfoflags,
3044 SOURCE => ($generic
3045 ? '$<' : $source),
3046 SOURCE_INFO => ($generic_info
3047 ? '$<' : $source),
3048 SOURCE_REAL => $source,
3049 SOURCE_SUFFIX => $ssfx,
3050 );
3051 return ($dirstamp, "$dpfx.dvi", "$dpfx.pdf", "$dpfx.ps", "$dpfx.html");
3052 }
3055 # $TEXICLEANS
3056 # handle_texinfo_helper ($info_texinfos)
3057 # --------------------------------------
3058 # Handle all Texinfo source; helper for handle_texinfo.
3059 sub handle_texinfo_helper ($)
3060 {
3061 my ($info_texinfos) = @_;
3062 my (@infobase, @info_deps_list, @texi_deps);
3063 my %versions;
3064 my $done = 0;
3065 my @texi_cleans;
3067 # Build a regex matching user-cleaned files.
3068 my $d = var 'DISTCLEANFILES';
3069 my $c = var 'CLEANFILES';
3070 my @f = ();
3071 push @f, $d->value_as_list_recursive (inner_expand => 1) if $d;
3072 push @f, $c->value_as_list_recursive (inner_expand => 1) if $c;
3073 @f = map { s|[^A-Za-z_0-9*\[\]\-]|\\$&|g; s|\*|[^/]*|g; $_; } @f;
3074 my $user_cleaned_files = '^(?:' . join ('|', @f) . ')$';
3076 foreach my $texi
3077 ($info_texinfos->value_as_list_recursive (inner_expand => 1))
3078 {
3079 my $infobase = $texi;
3080 $infobase =~ s/\.(txi|texinfo|texi)$//;
3082 if ($infobase eq $texi)
3083 {
3084 # FIXME: report line number.
3085 err_am "texinfo file `$texi' has unrecognized extension";
3086 next;
3087 }
3089 push @infobase, $infobase;
3091 # If 'version.texi' is referenced by input file, then include
3092 # automatic versioning capability.
3093 my ($out_file, $vtexi, @clean_files) =
3094 scan_texinfo_file ("$relative_dir/$texi")
3095 or next;
3096 push (@texi_cleans, @clean_files);
3098 # If the Texinfo source is in a subdirectory, create the
3099 # resulting info in this subdirectory. If it is in the current
3100 # directory, try hard to not prefix "./" because it breaks the
3101 # generic rules.
3102 my $outdir = dirname ($texi) . '/';
3103 $outdir = "" if $outdir eq './';
3104 $out_file = $outdir . $out_file;
3106 # Until Automake 1.6.3, .info files were built in the
3107 # source tree. This was an obstacle to the support of
3108 # non-distributed .info files, and non-distributed .texi
3109 # files.
3110 #
3111 # * Non-distributed .texi files is important in some packages
3112 # where .texi files are built at make time, probably using
3113 # other binaries built in the package itself, maybe using
3114 # tools or information found on the build host. Because
3115 # these files are not distributed they are always rebuilt
3116 # at make time; they should therefore not lie in the source
3117 # directory. One plan was to support this using
3118 # nodist_info_TEXINFOS or something similar. (Doing this
3119 # requires some sanity checks. For instance Automake should
3120 # not allow:
3121 # dist_info_TEXINFOS = foo.texi
3122 # nodist_foo_TEXINFOS = included.texi
3123 # because a distributed file should never depend on a
3124 # non-distributed file.)
3125 #
3126 # * If .texi files are not distributed, then .info files should
3127 # not be distributed either. There are also cases where one
3128 # wants to distribute .texi files, but does not want to
3129 # distribute the .info files. For instance the Texinfo package
3130 # distributes the tool used to build these files; it would
3131 # be a waste of space to distribute them. It's not clear
3132 # which syntax we should use to indicate that .info files should
3133 # not be distributed. Akim Demaille suggested that eventually
3134 # we switch to a new syntax:
3135 # | Maybe we should take some inspiration from what's already
3136 # | done in the rest of Automake. Maybe there is too much
3137 # | syntactic sugar here, and you want
3138 # | nodist_INFO = bar.info
3139 # | dist_bar_info_SOURCES = bar.texi
3140 # | bar_texi_DEPENDENCIES = foo.texi
3141 # | with a bit of magic to have bar.info represent the whole
3142 # | bar*info set. That's a lot more verbose that the current
3143 # | situation, but it is # not new, hence the user has less
3144 # | to learn.
3145 # |
3146 # | But there is still too much room for meaningless specs:
3147 # | nodist_INFO = bar.info
3148 # | dist_bar_info_SOURCES = bar.texi
3149 # | dist_PS = bar.ps something-written-by-hand.ps
3150 # | nodist_bar_ps_SOURCES = bar.texi
3151 # | bar_texi_DEPENDENCIES = foo.texi
3152 # | here bar.texi is dist_ in line 2, and nodist_ in 4.
3153 #
3154 # Back to the point, it should be clear that in order to support
3155 # non-distributed .info files, we need to build them in the
3156 # build tree, not in the source tree (non-distributed .texi
3157 # files are less of a problem, because we do not output build
3158 # rules for them). In Automake 1.7 .info build rules have been
3159 # largely cleaned up so that .info files get always build in the
3160 # build tree, even when distributed. The idea was that
3161 # (1) if during a VPATH build the .info file was found to be
3162 # absent or out-of-date (in the source tree or in the
3163 # build tree), Make would rebuild it in the build tree.
3164 # If an up-to-date source-tree of the .info file existed,
3165 # make would not rebuild it in the build tree.
3166 # (2) having two copies of .info files, one in the source tree
3167 # and one (newer) in the build tree is not a problem
3168 # because `make dist' always pick files in the build tree
3169 # first.
3170 # However it turned out the be a bad idea for several reasons:
3171 # * Tru64, OpenBSD, and FreeBSD (not NetBSD) Make do not behave
3172 # like GNU Make on point (1) above. These implementations
3173 # of Make would always rebuild .info files in the build
3174 # tree, even if such files were up to date in the source
3175 # tree. Consequently, it was impossible to perform a VPATH
3176 # build of a package containing Texinfo files using these
3177 # Make implementations.
3178 # (Refer to the Autoconf Manual, section "Limitation of
3179 # Make", paragraph "VPATH", item "target lookup", for
3180 # an account of the differences between these
3181 # implementations.)
3182 # * The GNU Coding Standards require these files to be built
3183 # in the source-tree (when they are distributed, that is).
3184 # * Keeping a fresher copy of distributed files in the
3185 # build tree can be annoying during development because
3186 # - if the files is kept under CVS, you really want it
3187 # to be updated in the source tree
3188 # - it is confusing that `make distclean' does not erase
3189 # all files in the build tree.
3190 #
3191 # Consequently, starting with Automake 1.8, .info files are
3192 # built in the source tree again. Because we still plan to
3193 # support non-distributed .info files at some point, we
3194 # have a single variable ($INSRC) that controls whether
3195 # the current .info file must be built in the source tree
3196 # or in the build tree. Actually this variable is switched
3197 # off for .info files that appear to be cleaned; this is
3198 # for backward compatibility with package such as Texinfo,
3199 # which do things like
3200 # info_TEXINFOS = texinfo.txi info-stnd.texi info.texi
3201 # DISTCLEANFILES = texinfo texinfo-* info*.info*
3202 # # Do not create info files for distribution.
3203 # dist-info:
3204 # in order not to distribute .info files.
3205 my $insrc = ($out_file =~ $user_cleaned_files) ? 0 : 1;
3207 my $soutdir = '$(srcdir)/' . $outdir;
3208 $outdir = $soutdir if $insrc;
3210 # If user specified file_TEXINFOS, then use that as explicit
3211 # dependency list.
3212 @texi_deps = ();
3213 push (@texi_deps, "$soutdir$vtexi") if $vtexi;
3215 my $canonical = canonicalize ($infobase);
3216 if (var ($canonical . "_TEXINFOS"))
3217 {
3218 push (@texi_deps, '$(' . $canonical . '_TEXINFOS)');
3219 push_dist_common ('$(' . $canonical . '_TEXINFOS)');
3220 }
3222 my ($dirstamp, @cfiles) =
3223 output_texinfo_build_rules ($texi, $out_file, $insrc, @texi_deps);
3224 push (@texi_cleans, @cfiles);
3226 push (@info_deps_list, $out_file);
3228 # If a vers*.texi file is needed, emit the rule.
3229 if ($vtexi)
3230 {
3231 err_am ("`$vtexi', included in `$texi', "
3232 . "also included in `$versions{$vtexi}'")
3233 if defined $versions{$vtexi};
3234 $versions{$vtexi} = $texi;
3236 # We number the stamp-vti files. This is doable since the
3237 # actual names don't matter much. We only number starting
3238 # with the second one, so that the common case looks nice.
3239 my $vti = ($done ? $done : 'vti');
3240 ++$done;
3242 # This is ugly, but it is our historical practice.
3243 if ($config_aux_dir_set_in_configure_ac)
3244 {
3245 require_conf_file_with_macro (TRUE, 'info_TEXINFOS', FOREIGN,
3246 'mdate-sh');
3247 }
3248 else
3249 {
3250 require_file_with_macro (TRUE, 'info_TEXINFOS',
3251 FOREIGN, 'mdate-sh');
3252 }
3254 my $conf_dir;
3255 if ($config_aux_dir_set_in_configure_ac)
3256 {
3257 $conf_dir = "$am_config_aux_dir/";
3258 }
3259 else
3260 {
3261 $conf_dir = '$(srcdir)/';
3262 }
3263 $output_rules .= file_contents ('texi-vers',
3264 new Automake::Location,
3265 TEXI => $texi,
3266 VTI => $vti,
3267 STAMPVTI => "${soutdir}stamp-$vti",
3268 VTEXI => "$soutdir$vtexi",
3269 MDDIR => $conf_dir,
3270 DIRSTAMP => $dirstamp);
3271 }
3272 }
3274 # Handle location of texinfo.tex.
3275 my $need_texi_file = 0;
3276 my $texinfodir;
3277 if (var ('TEXINFO_TEX'))
3278 {
3279 # The user defined TEXINFO_TEX so assume he knows what he is
3280 # doing.
3281 $texinfodir = ('$(srcdir)/'
3282 . dirname (variable_value ('TEXINFO_TEX')));
3283 }
3284 elsif (option 'cygnus')
3285 {
3286 $texinfodir = '$(top_srcdir)/../texinfo';
3287 define_variable ('TEXINFO_TEX', "$texinfodir/texinfo.tex", INTERNAL);
3288 }
3289 elsif ($config_aux_dir_set_in_configure_ac)
3290 {
3291 $texinfodir = $am_config_aux_dir;
3292 define_variable ('TEXINFO_TEX', "$texinfodir/texinfo.tex", INTERNAL);
3293 $need_texi_file = 2; # so that we require_conf_file later
3294 }
3295 else
3296 {
3297 $texinfodir = '$(srcdir)';
3298 $need_texi_file = 1;
3299 }
3300 define_variable ('am__TEXINFO_TEX_DIR', $texinfodir, INTERNAL);
3302 push (@dist_targets, 'dist-info');
3304 if (! option 'no-installinfo')
3305 {
3306 # Make sure documentation is made and installed first. Use
3307 # $(INFO_DEPS), not 'info', because otherwise recursive makes
3308 # get run twice during "make all".
3309 unshift (@all, '$(INFO_DEPS)');
3310 }
3312 define_files_variable ("DVIS", @infobase, 'dvi', INTERNAL);
3313 define_files_variable ("PDFS", @infobase, 'pdf', INTERNAL);
3314 define_files_variable ("PSS", @infobase, 'ps', INTERNAL);
3315 define_files_variable ("HTMLS", @infobase, 'html', INTERNAL);
3317 # This next isn't strictly needed now -- the places that look here
3318 # could easily be changed to look in info_TEXINFOS. But this is
3319 # probably better, in case noinst_TEXINFOS is ever supported.
3320 define_variable ("TEXINFOS", variable_value ('info_TEXINFOS'), INTERNAL);
3322 # Do some error checking. Note that this file is not required
3323 # when in Cygnus mode; instead we defined TEXINFO_TEX explicitly
3324 # up above.
3325 if ($need_texi_file && ! option 'no-texinfo.tex')
3326 {
3327 if ($need_texi_file > 1)
3328 {
3329 require_conf_file_with_macro (TRUE, 'info_TEXINFOS', FOREIGN,
3330 'texinfo.tex');
3331 }
3332 else
3333 {
3334 require_file_with_macro (TRUE, 'info_TEXINFOS', FOREIGN,
3335 'texinfo.tex');
3336 }
3337 }
3339 return makefile_wrap ("", "\t ", @texi_cleans);
3340 }
3343 # handle_texinfo ()
3344 # -----------------
3345 # Handle all Texinfo source.
3346 sub handle_texinfo ()
3347 {
3348 reject_var 'TEXINFOS', "`TEXINFOS' is an anachronism; use `info_TEXINFOS'";
3349 # FIXME: I think this is an obsolete future feature name.
3350 reject_var 'html_TEXINFOS', "HTML generation not yet supported";
3352 my $info_texinfos = var ('info_TEXINFOS');
3353 my $texiclean = "";
3354 if ($info_texinfos)
3355 {
3356 $texiclean = handle_texinfo_helper ($info_texinfos);
3357 }
3358 $output_rules .= file_contents ('texinfos',
3359 new Automake::Location,
3360 TEXICLEAN => $texiclean,
3361 'LOCAL-TEXIS' => !!$info_texinfos);
3362 }
3365 # Handle any man pages.
3366 sub handle_man_pages
3367 {
3368 reject_var 'MANS', "`MANS' is an anachronism; use `man_MANS'";
3370 # Find all the sections in use. We do this by first looking for
3371 # "standard" sections, and then looking for any additional
3372 # sections used in man_MANS.
3373 my (%sections, %notrans_sections, %trans_sections,
3374 %notrans_vars, %trans_vars, %notrans_sect_vars, %trans_sect_vars);
3375 # We handle nodist_ for uniformity. man pages aren't distributed
3376 # by default so it isn't actually very important.
3377 foreach my $npfx ('', 'notrans_')
3378 {
3379 foreach my $pfx ('', 'dist_', 'nodist_')
3380 {
3381 # Add more sections as needed.
3382 foreach my $section ('0'..'9', 'n', 'l')
3383 {
3384 my $varname = $npfx . $pfx . 'man' . $section . '_MANS';
3385 if (var ($varname))
3386 {
3387 $sections{$section} = 1;
3388 $varname = '$(' . $varname . ')';
3389 if ($npfx eq 'notrans_')
3390 {
3391 $notrans_sections{$section} = 1;
3392 $notrans_sect_vars{$varname} = 1;
3393 }
3394 else
3395 {
3396 $trans_sections{$section} = 1;
3397 $trans_sect_vars{$varname} = 1;
3398 }
3400 &push_dist_common ($varname)
3401 if $pfx eq 'dist_';
3402 }
3403 }
3405 my $varname = $npfx . $pfx . 'man_MANS';
3406 my $var = var ($varname);
3407 if ($var)
3408 {
3409 foreach ($var->value_as_list_recursive)
3410 {
3411 # A page like `foo.1c' goes into man1dir.
3412 if (/\.([0-9a-z])([a-z]*)$/)
3413 {
3414 $sections{$1} = 1;
3415 if ($npfx eq 'notrans_')
3416 {
3417 $notrans_sections{$1} = 1;
3418 }
3419 else
3420 {
3421 $trans_sections{$1} = 1;
3422 }
3423 }
3424 }
3426 $varname = '$(' . $varname . ')';
3427 if ($npfx eq 'notrans_')
3428 {
3429 $notrans_vars{$varname} = 1;
3430 }
3431 else
3432 {
3433 $trans_vars{$varname} = 1;
3434 }
3435 &push_dist_common ($varname)
3436 if $pfx eq 'dist_';
3437 }
3438 }
3439 }
3441 return unless %sections;
3443 my @unsorted_deps;
3445 # Build section independent variables.
3446 my $have_notrans = %notrans_vars;
3447 my @notrans_list = sort keys %notrans_vars;
3448 my $have_trans = %trans_vars;
3449 my @trans_list = sort keys %trans_vars;
3451 # Now for each section, generate an install and uninstall rule.
3452 # Sort sections so output is deterministic.
3453 foreach my $section (sort keys %sections)
3454 {
3455 # Build section dependent variables.
3456 my $notrans_mans = $have_notrans || exists $notrans_sections{$section};
3457 my $trans_mans = $have_trans || exists $trans_sections{$section};
3458 my (%notrans_this_sect, %trans_this_sect);
3459 my $expr = 'man' . $section . '_MANS';
3460 foreach my $varname (keys %notrans_sect_vars)
3461 {
3462 if ($varname =~ /$expr/)
3463 {
3464 $notrans_this_sect{$varname} = 1;
3465 }
3466 }
3467 foreach my $varname (keys %trans_sect_vars)
3468 {
3469 if ($varname =~ /$expr/)
3470 {
3471 $trans_this_sect{$varname} = 1;
3472 }
3473 }
3474 my @notrans_sect_list = sort keys %notrans_this_sect;
3475 my @trans_sect_list = sort keys %trans_this_sect;
3476 @unsorted_deps = (keys %notrans_vars, keys %trans_vars,
3477 keys %notrans_this_sect, keys %trans_this_sect);
3478 my @deps = sort @unsorted_deps;
3479 $output_rules .= &file_contents ('mans',
3480 new Automake::Location,
3481 SECTION => $section,
3482 DEPS => "@deps",
3483 NOTRANS_MANS => $notrans_mans,
3484 NOTRANS_SECT_LIST => "@notrans_sect_list",
3485 HAVE_NOTRANS => $have_notrans,
3486 NOTRANS_LIST => "@notrans_list",
3487 TRANS_MANS => $trans_mans,
3488 TRANS_SECT_LIST => "@trans_sect_list",
3489 HAVE_TRANS => $have_trans,
3490 TRANS_LIST => "@trans_list");
3491 }
3493 @unsorted_deps = (keys %notrans_vars, keys %trans_vars,
3494 keys %notrans_sect_vars, keys %trans_sect_vars);
3495 my @mans = sort @unsorted_deps;
3496 $output_vars .= file_contents ('mans-vars',
3497 new Automake::Location,
3498 MANS => "@mans");
3500 push (@all, '$(MANS)')
3501 unless option 'no-installman';
3502 }
3504 # Handle DATA variables.
3505 sub handle_data
3506 {
3507 &am_install_var ('-noextra', '-candist', 'data', 'DATA',
3508 'data', 'dataroot', 'dvi', 'html', 'pdf', 'ps',
3509 'sysconf', 'sharedstate', 'localstate',
3510 'pkgdata', 'lisp', 'noinst', 'check');
3511 }
3513 # Handle TAGS.
3514 sub handle_tags
3515 {
3516 my @tag_deps = ();
3517 my @ctag_deps = ();
3518 if (var ('SUBDIRS'))
3519 {
3520 $output_rules .= ("tags-recursive:\n"
3521 . "\tlist=\'\$(SUBDIRS)\'; for subdir in \$\$list; do \\\n"
3522 # Never fail here if a subdir fails; it
3523 # isn't important.
3524 . "\t test \"\$\$subdir\" = . || (cd \$\$subdir"
3525 . " && \$(MAKE) \$(AM_MAKEFLAGS) tags); \\\n"
3526 . "\tdone\n");
3527 push (@tag_deps, 'tags-recursive');
3528 &depend ('.PHONY', 'tags-recursive');
3530 $output_rules .= ("ctags-recursive:\n"
3531 . "\tlist=\'\$(SUBDIRS)\'; for subdir in \$\$list; do \\\n"
3532 # Never fail here if a subdir fails; it
3533 # isn't important.
3534 . "\t test \"\$\$subdir\" = . || (cd \$\$subdir"
3535 . " && \$(MAKE) \$(AM_MAKEFLAGS) ctags); \\\n"
3536 . "\tdone\n");
3537 push (@ctag_deps, 'ctags-recursive');
3538 &depend ('.PHONY', 'ctags-recursive');
3539 }
3541 if (&saw_sources_p (1)
3542 || var ('ETAGS_ARGS')
3543 || @tag_deps)
3544 {
3545 my @config;
3546 foreach my $spec (@config_headers)
3547 {
3548 my ($out, @ins) = split_config_file_spec ($spec);
3549 foreach my $in (@ins)
3550 {
3551 # If the config header source is in this directory,
3552 # require it.
3553 push @config, basename ($in)
3554 if $relative_dir eq dirname ($in);
3555 }
3556 }
3557 $output_rules .= &file_contents ('tags',
3558 new Automake::Location,
3559 CONFIG => "@config",
3560 TAGSDIRS => "@tag_deps",
3561 CTAGSDIRS => "@ctag_deps");
3563 set_seen 'TAGS_DEPENDENCIES';
3564 }
3565 elsif (reject_var ('TAGS_DEPENDENCIES',
3566 "doesn't make sense to define `TAGS_DEPENDENCIES'"
3567 . "without\nsources or `ETAGS_ARGS'"))
3568 {
3569 }
3570 else
3571 {
3572 # Every Makefile must define some sort of TAGS rule.
3573 # Otherwise, it would be possible for a top-level "make TAGS"
3574 # to fail because some subdirectory failed.
3575 $output_rules .= "tags: TAGS\nTAGS:\n\n";
3576 # Ditto ctags.
3577 $output_rules .= "ctags: CTAGS\nCTAGS:\n\n";
3578 }
3579 }
3581 # Handle multilib support.
3582 sub handle_multilib
3583 {
3584 if ($seen_multilib && $relative_dir eq '.')
3585 {
3586 $output_rules .= &file_contents ('multilib', new Automake::Location);
3587 push (@all, 'all-multi');
3588 }
3589 }
3592 # user_phony_rule ($NAME)
3593 # -----------------------
3594 # Return false if rule $NAME does not exist. Otherwise,
3595 # declare it as phony, complete its definition (in case it is
3596 # conditional), and return its Automake::Rule instance.
3597 sub user_phony_rule ($)
3598 {
3599 my ($name) = @_;
3600 my $rule = rule $name;
3601 if ($rule)
3602 {
3603 depend ('.PHONY', $name);
3604 # Define $NAME in all condition where it is not already defined,
3605 # so that it is always OK to depend on $NAME.
3606 for my $c ($rule->not_always_defined_in_cond (TRUE)->conds)
3607 {
3608 Automake::Rule::define ($name, 'internal', RULE_AUTOMAKE,
3609 $c, INTERNAL);
3610 $output_rules .= $c->subst_string . "$name:\n";
3611 }
3612 }
3613 return $rule;
3614 }
3617 # $BOOLEAN
3618 # &for_dist_common ($A, $B)
3619 # -------------------------
3620 # Subroutine for &handle_dist: sort files to dist.
3621 #
3622 # We put README first because it then becomes easier to make a
3623 # Usenet-compliant shar file (in these, README must be first).
3624 #
3625 # FIXME: do more ordering of files here.
3626 sub for_dist_common
3627 {
3628 return 0
3629 if $a eq $b;
3630 return -1
3631 if $a eq 'README';
3632 return 1
3633 if $b eq 'README';
3634 return $a cmp $b;
3635 }
3637 # handle_dist
3638 # -----------
3639 # Handle 'dist' target.
3640 sub handle_dist ()
3641 {
3642 # Substitutions for distdir.am
3643 my %transform;
3645 # Define DIST_SUBDIRS. This must always be done, regardless of the
3646 # no-dist setting: target like `distclean' or `maintainer-clean' use it.
3647 my $subdirs = var ('SUBDIRS');
3648 if ($subdirs)
3649 {
3650 # If SUBDIRS is conditionally defined, then set DIST_SUBDIRS
3651 # to all possible directories, and use it. If DIST_SUBDIRS is
3652 # defined, just use it.
3654 # Note that we check DIST_SUBDIRS first on purpose, so that
3655 # we don't call has_conditional_contents for now reason.
3656 # (In the past one project used so many conditional subdirectories
3657 # that calling has_conditional_contents on SUBDIRS caused
3658 # automake to grow to 150Mb -- this should not happen with
3659 # the current implementation of has_conditional_contents,
3660 # but it's more efficient to avoid the call anyway.)
3661 if (var ('DIST_SUBDIRS'))
3662 {
3663 }
3664 elsif ($subdirs->has_conditional_contents)
3665 {
3666 define_pretty_variable
3667 ('DIST_SUBDIRS', TRUE, INTERNAL,
3668 uniq ($subdirs->value_as_list_recursive));
3669 }
3670 else
3671 {
3672 # We always define this because that is what `distclean'
3673 # wants.
3674 define_pretty_variable ('DIST_SUBDIRS', TRUE, INTERNAL,
3675 '$(SUBDIRS)');
3676 }
3677 }
3679 # The remaining definitions are only required when a dist target is used.
3680 return if option 'no-dist';
3682 # At least one of the archive formats must be enabled.
3683 if ($relative_dir eq '.')
3684 {
3685 my $archive_defined = option 'no-dist-gzip' ? 0 : 1;
3686 $archive_defined ||=
3687 grep { option "dist-$_" } qw(shar zip tarZ bzip2 lzma);
3688 error (option 'no-dist-gzip',
3689 "no-dist-gzip specified but no dist-* specified, "
3690 . "at least one archive format must be enabled")
3691 unless $archive_defined;
3692 }
3694 # Look for common files that should be included in distribution.
3695 # If the aux dir is set, and it does not have a Makefile.am, then
3696 # we check for these files there as well.
3697 my $check_aux = 0;
3698 if ($relative_dir eq '.'
3699 && $config_aux_dir_set_in_configure_ac)
3700 {
3701 if (! &is_make_dir ($config_aux_dir))
3702 {
3703 $check_aux = 1;
3704 }
3705 }
3706 foreach my $cfile (@common_files)
3707 {
3708 if (dir_has_case_matching_file ($relative_dir, $cfile)
3709 # The file might be absent, but if it can be built it's ok.
3710 || rule $cfile)
3711 {
3712 &push_dist_common ($cfile);
3713 }
3715 # Don't use `elsif' here because a file might meaningfully
3716 # appear in both directories.
3717 if ($check_aux && dir_has_case_matching_file ($config_aux_dir, $cfile))
3718 {
3719 &push_dist_common ("$config_aux_dir/$cfile")
3720 }
3721 }
3723 # We might copy elements from $configure_dist_common to
3724 # %dist_common if we think we need to. If the file appears in our
3725 # directory, we would have discovered it already, so we don't
3726 # check that. But if the file is in a subdir without a Makefile,
3727 # we want to distribute it here if we are doing `.'. Ugly!
3728 if ($relative_dir eq '.')
3729 {
3730 foreach my $file (split (' ' , $configure_dist_common))
3731 {
3732 push_dist_common ($file)
3733 unless is_make_dir (dirname ($file));
3734 }
3735 }
3737 # Files to distributed. Don't use ->value_as_list_recursive
3738 # as it recursively expands `$(dist_pkgdata_DATA)' etc.
3739 my @dist_common = split (' ', rvar ('DIST_COMMON')->variable_value);
3740 @dist_common = uniq (sort for_dist_common (@dist_common));
3741 variable_delete 'DIST_COMMON';
3742 define_pretty_variable ('DIST_COMMON', TRUE, INTERNAL, @dist_common);
3744 # Now that we've processed DIST_COMMON, disallow further attempts
3745 # to set it.
3746 $handle_dist_run = 1;
3748 # Scan EXTRA_DIST to see if we need to distribute anything from a
3749 # subdir. If so, add it to the list. I didn't want to do this
3750 # originally, but there were so many requests that I finally
3751 # relented.
3752 my $extra_dist = var ('EXTRA_DIST');
3754 $transform{'DISTCHECK-HOOK'} = !! rule 'distcheck-hook';
3755 $transform{'GETTEXT'} = $seen_gettext && !$seen_gettext_external;
3757 # If the target `dist-hook' exists, make sure it is run. This
3758 # allows users to do random weird things to the distribution
3759 # before it is packaged up.
3760 push (@dist_targets, 'dist-hook')
3761 if user_phony_rule 'dist-hook';
3762 $transform{'DIST-TARGETS'} = join (' ', @dist_targets);
3764 my $flm = option ('filename-length-max');
3765 my $filename_filter = $flm ? '.' x $flm->[1] : '';
3767 $output_rules .= &file_contents ('distdir',
3768 new Automake::Location,
3769 %transform,
3770 FILENAME_FILTER => $filename_filter);
3771 }
3774 # check_directory ($NAME, $WHERE)
3775 # -------------------------------
3776 # Ensure $NAME is a directory, and that it uses sane name.
3777 # Use $WHERE as a location in the diagnostic, if any.
3778 sub check_directory ($$)
3779 {
3780 my ($dir, $where) = @_;
3782 error $where, "required directory $relative_dir/$dir does not exist"
3783 unless -d "$relative_dir/$dir";
3785 # If an `obj/' directory exists, BSD make will enter it before
3786 # reading `Makefile'. Hence the `Makefile' in the current directory
3787 # will not be read.
3788 #
3789 # % cat Makefile
3790 # all:
3791 # echo Hello
3792 # % cat obj/Makefile
3793 # all:
3794 # echo World
3795 # % make # GNU make
3796 # echo Hello
3797 # Hello
3798 # % pmake # BSD make
3799 # echo World
3800 # World
3801 msg ('portability', $where,
3802 "naming a subdirectory `obj' causes troubles with BSD make")
3803 if $dir eq 'obj';
3805 # `aux' is probably the most important of the following forbidden name,
3806 # since it's tempting to use it as an AC_CONFIG_AUX_DIR.
3807 msg ('portability', $where,
3808 "name `$dir' is reserved on W32 and DOS platforms")
3809 if grep (/^\Q$dir\E$/i, qw/aux lpt1 lpt2 lpt3 com1 com2 com3 com4 con prn/);
3810 }
3812 # check_directories_in_var ($VARIABLE)
3813 # ------------------------------------
3814 # Recursively check all items in variables $VARIABLE as directories
3815 sub check_directories_in_var ($)
3816 {
3817 my ($var) = @_;
3818 $var->traverse_recursively
3819 (sub
3820 {
3821 my ($var, $val, $cond, $full_cond) = @_;
3822 check_directory ($val, $var->rdef ($cond)->location);
3823 return ();
3824 },
3825 undef,
3826 skip_ac_subst => 1);
3827 }
3829 # &handle_subdirs ()
3830 # ------------------
3831 # Handle subdirectories.
3832 sub handle_subdirs ()
3833 {
3834 my $subdirs = var ('SUBDIRS');
3835 return
3836 unless $subdirs;
3838 check_directories_in_var $subdirs;
3840 my $dsubdirs = var ('DIST_SUBDIRS');
3841 check_directories_in_var $dsubdirs
3842 if $dsubdirs;
3844 $output_rules .= &file_contents ('subdirs', new Automake::Location);
3845 rvar ('RECURSIVE_TARGETS')->rdef (TRUE)->{'pretty'} = VAR_SORTED; # Gross!
3846 }
3849 # ($REGEN, @DEPENDENCIES)
3850 # &scan_aclocal_m4
3851 # ----------------
3852 # If aclocal.m4 creation is automated, return the list of its dependencies.
3853 sub scan_aclocal_m4 ()
3854 {
3855 my $regen_aclocal = 0;
3857 set_seen 'CONFIG_STATUS_DEPENDENCIES';
3858 set_seen 'CONFIGURE_DEPENDENCIES';
3860 if (-f 'aclocal.m4')
3861 {
3862 &define_variable ("ACLOCAL_M4", '$(top_srcdir)/aclocal.m4', INTERNAL);
3864 my $aclocal = new Automake::XFile "< aclocal.m4";
3865 my $line = $aclocal->getline;
3866 $regen_aclocal = $line =~ 'generated automatically by aclocal';
3867 }
3869 my @ac_deps = ();
3871 if (set_seen ('ACLOCAL_M4_SOURCES'))
3872 {
3873 push (@ac_deps, '$(ACLOCAL_M4_SOURCES)');
3874 msg_var ('obsolete', 'ACLOCAL_M4_SOURCES',
3875 "`ACLOCAL_M4_SOURCES' is obsolete.\n"
3876 . "It should be safe to simply remove it.");
3877 }
3879 # Note that it might be possible that aclocal.m4 doesn't exist but
3880 # should be auto-generated. This case probably isn't very
3881 # important.
3883 return ($regen_aclocal, @ac_deps);
3884 }
3887 # Helper function for substitute_ac_subst_variables.
3888 sub substitute_ac_subst_variables_worker($)
3889 {
3890 my ($token) = @_;
3891 return "\@$token\@" if var $token;
3892 return "\${$token\}";
3893 }
3895 # substitute_ac_subst_variables ($TEXT)
3896 # -------------------------------------
3897 # Replace any occurrence of ${FOO} in $TEXT by @FOO@ if FOO is an AC_SUBST
3898 # variable.
3899 sub substitute_ac_subst_variables ($)
3900 {
3901 my ($text) = @_;
3902 $text =~ s/\${([^ \t=:+{}]+)}/&substitute_ac_subst_variables_worker ($1)/ge;
3903 return $text;
3904 }
3906 # @DEPENDENCIES
3907 # &prepend_srcdir (@INPUTS)
3908 # -------------------------
3909 # Prepend $(srcdir) or $(top_srcdir) to all @INPUTS. The idea is that
3910 # if an input file has a directory part the same as the current
3911 # directory, then the directory part is simply replaced by $(srcdir).
3912 # But if the directory part is different, then $(top_srcdir) is
3913 # prepended.
3914 sub prepend_srcdir (@)
3915 {
3916 my (@inputs) = @_;
3917 my @newinputs;
3919 foreach my $single (@inputs)
3920 {
3921 if (dirname ($single) eq $relative_dir)
3922 {
3923 push (@newinputs, '$(srcdir)/' . basename ($single));
3924 }
3925 else
3926 {
3927 push (@newinputs, '$(top_srcdir)/' . $single);
3928 }
3929 }
3930 return @newinputs;
3931 }
3933 # @DEPENDENCIES
3934 # rewrite_inputs_into_dependencies ($OUTPUT, @INPUTS)
3935 # ---------------------------------------------------
3936 # Compute a list of dependencies appropriate for the rebuild
3937 # rule of
3938 # AC_CONFIG_FILES($OUTPUT:$INPUT[0]:$INPUTS[1]:...)
3939 # Also distribute $INPUTs which are not built by another AC_CONFIG_FOOS.
3940 sub rewrite_inputs_into_dependencies ($@)
3941 {
3942 my ($file, @inputs) = @_;
3943 my @res = ();
3945 for my $i (@inputs)
3946 {
3947 # We cannot create dependencies on shell variables.
3948 next if (substitute_ac_subst_variables $i) =~ /\$/;
3950 if (exists $ac_config_files_location{$i} && $i ne $file)
3951 {
3952 my $di = dirname $i;
3953 if ($di eq $relative_dir)
3954 {
3955 $i = basename $i;
3956 }
3957 # In the top-level Makefile we do not use $(top_builddir), because
3958 # we are already there, and since the targets are built without
3959 # a $(top_builddir), it helps BSD Make to match them with
3960 # dependencies.
3961 elsif ($relative_dir ne '.')
3962 {
3963 $i = '$(top_builddir)/' . $i;
3964 }
3965 }
3966 else
3967 {
3968 msg ('error', $ac_config_files_location{$file},
3969 "required file `$i' not found")
3970 unless $i =~ /\$/ || exists $output_files{$i} || -f $i;
3971 ($i) = prepend_srcdir ($i);
3972 push_dist_common ($i);
3973 }
3974 push @res, $i;
3975 }
3976 return @res;
3977 }
3981 # &handle_configure ($MAKEFILE_AM, $MAKEFILE_IN, $MAKEFILE, @INPUTS)
3982 # ------------------------------------------------------------------
3983 # Handle remaking and configure stuff.
3984 # We need the name of the input file, to do proper remaking rules.
3985 sub handle_configure ($$$@)
3986 {
3987 my ($makefile_am, $makefile_in, $makefile, @inputs) = @_;
3989 prog_error 'empty @inputs'
3990 unless @inputs;
3992 my ($rel_makefile_am, $rel_makefile_in) = prepend_srcdir ($makefile_am,
3993 $makefile_in);
3994 my $rel_makefile = basename $makefile;
3996 my $colon_infile = ':' . join (':', @inputs);
3997 $colon_infile = '' if $colon_infile eq ":$makefile.in";
3998 my @rewritten = rewrite_inputs_into_dependencies ($makefile, @inputs);
3999 my ($regen_aclocal_m4, @aclocal_m4_deps) = scan_aclocal_m4;
4000 define_pretty_variable ('am__aclocal_m4_deps', TRUE, INTERNAL,
4001 @configure_deps, @aclocal_m4_deps,
4002 '$(top_srcdir)/' . $configure_ac);
4003 my @configuredeps = ('$(am__aclocal_m4_deps)', '$(CONFIGURE_DEPENDENCIES)');
4004 push @configuredeps, '$(ACLOCAL_M4)' if -f 'aclocal.m4';
4005 define_pretty_variable ('am__configure_deps', TRUE, INTERNAL,
4006 @configuredeps);
4008 $output_rules .= file_contents
4009 ('configure',
4010 new Automake::Location,
4011 MAKEFILE => $rel_makefile,
4012 'MAKEFILE-DEPS' => "@rewritten",
4013 'CONFIG-MAKEFILE' => ($relative_dir eq '.') ? '$@' : '$(subdir)/$@',
4014 'MAKEFILE-IN' => $rel_makefile_in,
4015 'MAKEFILE-IN-DEPS' => "@include_stack",
4016 'MAKEFILE-AM' => $rel_makefile_am,
4017 STRICTNESS => global_option 'cygnus'
4018 ? 'cygnus' : $strictness_name,
4019 'USE-DEPS' => global_option 'no-dependencies'
4020 ? ' --ignore-deps' : '',
4021 'MAKEFILE-AM-SOURCES' => "$makefile$colon_infile",
4022 'REGEN-ACLOCAL-M4' => $regen_aclocal_m4);
4024 if ($relative_dir eq '.')
4025 {
4026 &push_dist_common ('acconfig.h')
4027 if -f 'acconfig.h';
4028 }
4030 # If we have a configure header, require it.
4031 my $hdr_index = 0;
4032 my @distclean_config;
4033 foreach my $spec (@config_headers)
4034 {
4035 $hdr_index += 1;
4036 # $CONFIG_H_PATH: config.h from top level.
4037 my ($config_h_path, @ins) = split_config_file_spec ($spec);
4038 my $config_h_dir = dirname ($config_h_path);
4040 # If the header is in the current directory we want to build
4041 # the header here. Otherwise, if we're at the topmost
4042 # directory and the header's directory doesn't have a
4043 # Makefile, then we also want to build the header.
4044 if ($relative_dir eq $config_h_dir
4045 || ($relative_dir eq '.' && ! &is_make_dir ($config_h_dir)))
4046 {
4047 my ($cn_sans_dir, $stamp_dir);
4048 if ($relative_dir eq $config_h_dir)
4049 {
4050 $cn_sans_dir = basename ($config_h_path);
4051 $stamp_dir = '';
4052 }
4053 else
4054 {
4055 $cn_sans_dir = $config_h_path;
4056 if ($config_h_dir eq '.')
4057 {
4058 $stamp_dir = '';
4059 }
4060 else
4061 {
4062 $stamp_dir = $config_h_dir . '/';
4063 }
4064 }
4066 # This will also distribute all inputs.
4067 @ins = rewrite_inputs_into_dependencies ($config_h_path, @ins);
4069 # Cannot define rebuild rules for filenames with shell variables.
4070 next if (substitute_ac_subst_variables $config_h_path) =~ /\$/;
4072 # Header defined in this directory.
4073 my @files;
4074 if (-f $config_h_path . '.top')
4075 {
4076 push (@files, "$cn_sans_dir.top");
4077 }
4078 if (-f $config_h_path . '.bot')
4079 {
4080 push (@files, "$cn_sans_dir.bot");
4081 }
4083 push_dist_common (@files);
4085 # For now, acconfig.h can only appear in the top srcdir.
4086 if (-f 'acconfig.h')
4087 {
4088 push (@files, '$(top_srcdir)/acconfig.h');
4089 }
4091 my $stamp = "${stamp_dir}stamp-h${hdr_index}";
4092 $output_rules .=
4093 file_contents ('remake-hdr',
4094 new Automake::Location,
4095 FILES => "@files",
4096 CONFIG_H => $cn_sans_dir,
4097 CONFIG_HIN => $ins[0],
4098 CONFIG_H_DEPS => "@ins",
4099 CONFIG_H_PATH => $config_h_path,
4100 STAMP => "$stamp");
4102 push @distclean_config, $cn_sans_dir, $stamp;
4103 }
4104 }
4106 $output_rules .= file_contents ('clean-hdr',
4107 new Automake::Location,
4108 FILES => "@distclean_config")
4109 if @distclean_config;
4111 # Distribute and define mkinstalldirs only if it is already present
4112 # in the package, for backward compatibility (some people may still
4113 # use $(mkinstalldirs)).
4114 my $mkidpath = "$config_aux_dir/mkinstalldirs";
4115 if (-f $mkidpath)
4116 {
4117 # Use require_file so that any existing script gets updated
4118 # by --force-missing.
4119 require_conf_file ($mkidpath, FOREIGN, 'mkinstalldirs');
4120 define_variable ('mkinstalldirs',
4121 "\$(SHELL) $am_config_aux_dir/mkinstalldirs", INTERNAL);
4122 }
4123 else
4124 {
4125 # Use $(install_sh), not $(MKDIR_P) because the latter requires
4126 # at least one argument, and $(mkinstalldirs) used to work
4127 # even without arguments (e.g. $(mkinstalldirs) $(conditional_dir)).
4128 define_variable ('mkinstalldirs', '$(install_sh) -d', INTERNAL);
4129 }
4131 reject_var ('CONFIG_HEADER',
4132 "`CONFIG_HEADER' is an anachronism; now determined "
4133 . "automatically\nfrom `$configure_ac'");
4135 my @config_h;
4136 foreach my $spec (@config_headers)
4137 {
4138 my ($out, @ins) = split_config_file_spec ($spec);
4139 # Generate CONFIG_HEADER define.
4140 if ($relative_dir eq dirname ($out))
4141 {
4142 push @config_h, basename ($out);
4143 }
4144 else
4145 {
4146 push @config_h, "\$(top_builddir)/$out";
4147 }
4148 }
4149 define_variable ("CONFIG_HEADER", "@config_h", INTERNAL)
4150 if @config_h;
4152 # Now look for other files in this directory which must be remade
4153 # by config.status, and generate rules for them.
4154 my @actual_other_files = ();
4155 # These get cleaned only in a VPATH build.
4156 my @actual_other_vpath_files = ();
4157 foreach my $lfile (@other_input_files)
4158 {
4159 my $file;
4160 my @inputs;
4161 if ($lfile =~ /^([^:]*):(.*)$/)
4162 {
4163 # This is the ":" syntax of AC_OUTPUT.
4164 $file = $1;
4165 @inputs = split (':', $2);
4166 }
4167 else
4168 {
4169 # Normal usage.
4170 $file = $lfile;
4171 @inputs = $file . '.in';
4172 }
4174 # Automake files should not be stored in here, but in %MAKE_LIST.
4175 prog_error ("$lfile in \@other_input_files\n"
4176 . "\@other_input_files = (@other_input_files)")
4177 if -f $file . '.am';
4179 my $local = basename ($file);
4181 # We skip files that aren't in this directory. However, if
4182 # the file's directory does not have a Makefile, and we are
4183 # currently doing `.', then we create a rule to rebuild the
4184 # file in the subdir.
4185 my $fd = dirname ($file);
4186 if ($fd ne $relative_dir)
4187 {
4188 if ($relative_dir eq '.' && ! &is_make_dir ($fd))
4189 {
4190 $local = $file;
4191 }
4192 else
4193 {
4194 next;
4195 }
4196 }
4198 my @rewritten_inputs = rewrite_inputs_into_dependencies ($file, @inputs);
4200 # Cannot output rules for shell variables.
4201 next if (substitute_ac_subst_variables $local) =~ /\$/;
4203 my $condstr = '';
4204 my $cond = $ac_config_files_condition{$lfile};
4205 if (defined $cond)
4206 {
4207 $condstr = $cond->subst_string;
4208 Automake::Rule::define ($local, $configure_ac, RULE_AUTOMAKE, $cond,
4209 $ac_config_files_location{$file});
4210 }
4211 $output_rules .= ($condstr . $local . ': '
4212 . '$(top_builddir)/config.status '
4213 . "@rewritten_inputs\n"
4214 . $condstr . "\t"
4215 . 'cd $(top_builddir) && '
4216 . '$(SHELL) ./config.status '
4217 . ($relative_dir eq '.' ? '' : '$(subdir)/')
4218 . '$@'
4219 . "\n");
4220 push (@actual_other_files, $local);
4221 }
4223 # For links we should clean destinations and distribute sources.
4224 foreach my $spec (@config_links)
4225 {
4226 my ($link, $file) = split /:/, $spec;
4227 # Some people do AC_CONFIG_LINKS($computed). We only handle
4228 # the DEST:SRC form.
4229 next unless $file;
4230 my $where = $ac_config_files_location{$link};
4232 # Skip destinations that contain shell variables.
4233 if ((substitute_ac_subst_variables $link) !~ /\$/)
4234 {
4235 # We skip links that aren't in this directory. However, if
4236 # the link's directory does not have a Makefile, and we are
4237 # currently doing `.', then we add the link to CONFIG_CLEAN_FILES
4238 # in `.'s Makefile.in.
4239 my $local = basename ($link);
4240 my $fd = dirname ($link);
4241 if ($fd ne $relative_dir)
4242 {
4243 if ($relative_dir eq '.' && ! &is_make_dir ($fd))
4244 {
4245 $local = $link;
4246 }
4247 else
4248 {
4249 $local = undef;
4250 }
4251 }
4252 if ($file ne $link)
4253 {
4254 push @actual_other_files, $local if $local;
4255 }
4256 else
4257 {
4258 push @actual_other_vpath_files, $local if $local;
4259 }
4260 }
4262 # Do not process sources that contain shell variables.
4263 if ((substitute_ac_subst_variables $file) !~ /\$/)
4264 {
4265 my $fd = dirname ($file);
4267 # We distribute files that are in this directory.
4268 # At the top-level (`.') we also distribute files whose
4269 # directory does not have a Makefile.
4270 if (($fd eq $relative_dir)
4271 || ($relative_dir eq '.' && ! &is_make_dir ($fd)))
4272 {
4273 # The following will distribute $file as a side-effect when
4274 # it is appropriate (i.e., when $file is not already an output).
4275 # We do not need the result, just the side-effect.
4276 rewrite_inputs_into_dependencies ($link, $file);
4277 }
4278 }
4279 }
4281 # These files get removed by "make distclean".
4282 define_pretty_variable ('CONFIG_CLEAN_FILES', TRUE, INTERNAL,
4283 @actual_other_files);
4284 define_pretty_variable ('CONFIG_CLEAN_VPATH_FILES', TRUE, INTERNAL,
4285 @actual_other_vpath_files);
4286 }
4288 # Handle C headers.
4289 sub handle_headers
4290 {
4291 my @r = &am_install_var ('-defaultdist', 'header', 'HEADERS', 'include',
4292 'oldinclude', 'pkginclude',
4293 'noinst', 'check');
4294 foreach (@r)
4295 {
4296 next unless $_->[1] =~ /\..*$/;
4297 &saw_extension ($&);
4298 }
4299 }
4301 sub handle_gettext
4302 {
4303 return if ! $seen_gettext || $relative_dir ne '.';
4305 my $subdirs = var 'SUBDIRS';
4307 if (! $subdirs)
4308 {
4309 err_ac "AM_GNU_GETTEXT used but SUBDIRS not defined";
4310 return;
4311 }
4313 # Perform some sanity checks to help users get the right setup.
4314 # We disable these tests when po/ doesn't exist in order not to disallow
4315 # unusual gettext setups.
4316 #
4317 # Bruno Haible:
4318 # | The idea is:
4319 # |
4320 # | 1) If a package doesn't have a directory po/ at top level, it
4321 # | will likely have multiple po/ directories in subpackages.
4322 # |
4323 # | 2) It is useful to warn for the absence of intl/ if AM_GNU_GETTEXT
4324 # | is used without 'external'. It is also useful to warn for the
4325 # | presence of intl/ if AM_GNU_GETTEXT([external]) is used. Both
4326 # | warnings apply only to the usual layout of packages, therefore
4327 # | they should both be disabled if no po/ directory is found at
4328 # | top level.
4330 if (-d 'po')
4331 {
4332 my @subdirs = $subdirs->value_as_list_recursive;
4334 msg_var ('syntax', $subdirs,
4335 "AM_GNU_GETTEXT used but `po' not in SUBDIRS")
4336 if ! grep ($_ eq 'po', @subdirs);
4338 # intl/ is not required when AM_GNU_GETTEXT is called with the
4339 # `external' option and AM_GNU_GETTEXT_INTL_SUBDIR is not called.
4340 msg_var ('syntax', $subdirs,
4341 "AM_GNU_GETTEXT used but `intl' not in SUBDIRS")
4342 if (! ($seen_gettext_external && ! $seen_gettext_intl)
4343 && ! grep ($_ eq 'intl', @subdirs));
4345 # intl/ should not be used with AM_GNU_GETTEXT([external]), except
4346 # if AM_GNU_GETTEXT_INTL_SUBDIR is called.
4347 msg_var ('syntax', $subdirs,
4348 "`intl' should not be in SUBDIRS when "
4349 . "AM_GNU_GETTEXT([external]) is used")
4350 if ($seen_gettext_external && ! $seen_gettext_intl
4351 && grep ($_ eq 'intl', @subdirs));
4352 }
4354 require_file ($ac_gettext_location, GNU, 'ABOUT-NLS');
4355 }
4357 # Handle footer elements.
4358 sub handle_footer
4359 {
4360 reject_rule ('.SUFFIXES',
4361 "use variable `SUFFIXES', not target `.SUFFIXES'");
4363 # Note: AIX 4.1 /bin/make will fail if any suffix rule appears
4364 # before .SUFFIXES. So we make sure that .SUFFIXES appears before
4365 # anything else, by sticking it right after the default: target.
4366 $output_header .= ".SUFFIXES:\n";
4367 my $suffixes = var 'SUFFIXES';
4368 my @suffixes = Automake::Rule::suffixes;
4369 if (@suffixes || $suffixes)
4370 {
4371 # Make sure SUFFIXES has unique elements. Sort them to ensure
4372 # the output remains consistent. However, $(SUFFIXES) is
4373 # always at the start of the list, unsorted. This is done
4374 # because make will choose rules depending on the ordering of
4375 # suffixes, and this lets the user have some control. Push
4376 # actual suffixes, and not $(SUFFIXES). Some versions of make
4377 # do not like variable substitutions on the .SUFFIXES line.
4378 my @user_suffixes = ($suffixes
4379 ? $suffixes->value_as_list_recursive : ());
4381 my %suffixes = map { $_ => 1 } @suffixes;
4382 delete @suffixes{@user_suffixes};
4384 $output_header .= (".SUFFIXES: "
4385 . join (' ', @user_suffixes, sort keys %suffixes)
4386 . "\n");
4387 }
4389 $output_trailer .= file_contents ('footer', new Automake::Location);
4390 }
4393 # Generate `make install' rules.
4394 sub handle_install ()
4395 {
4396 $output_rules .= &file_contents
4397 ('install',
4398 new Automake::Location,
4399 maybe_BUILT_SOURCES => (set_seen ('BUILT_SOURCES')
4400 ? (" \$(BUILT_SOURCES)\n"
4401 . "\t\$(MAKE) \$(AM_MAKEFLAGS)")
4402 : ''),
4403 'installdirs-local' => (user_phony_rule 'installdirs-local'
4404 ? ' installdirs-local' : ''),
4405 am__installdirs => variable_value ('am__installdirs') || '');
4406 }
4409 # Deal with all and all-am.
4410 sub handle_all ($)
4411 {
4412 my ($makefile) = @_;
4414 # Output `all-am'.
4416 # Put this at the beginning for the sake of non-GNU makes. This
4417 # is still wrong if these makes can run parallel jobs. But it is
4418 # right enough.
4419 unshift (@all, basename ($makefile));
4421 foreach my $spec (@config_headers)
4422 {
4423 my ($out, @ins) = split_config_file_spec ($spec);
4424 push (@all, basename ($out))
4425 if dirname ($out) eq $relative_dir;
4426 }
4428 # Install `all' hooks.
4429 push (@all, "all-local")
4430 if user_phony_rule "all-local";
4432 &pretty_print_rule ("all-am:", "\t\t", @all);
4433 &depend ('.PHONY', 'all-am', 'all');
4436 # Output `all'.
4438 my @local_headers = ();
4439 push @local_headers, '$(BUILT_SOURCES)'
4440 if var ('BUILT_SOURCES');
4441 foreach my $spec (@config_headers)
4442 {
4443 my ($out, @ins) = split_config_file_spec ($spec);
4444 push @local_headers, basename ($out)
4445 if dirname ($out) eq $relative_dir;
4446 }
4448 if (@local_headers)
4449 {
4450 # We need to make sure config.h is built before we recurse.
4451 # We also want to make sure that built sources are built
4452 # before any ordinary `all' targets are run. We can't do this
4453 # by changing the order of dependencies to the "all" because
4454 # that breaks when using parallel makes. Instead we handle
4455 # things explicitly.
4456 $output_all .= ("all: @local_headers"
4457 . "\n\t"
4458 . '$(MAKE) $(AM_MAKEFLAGS) '
4459 . (var ('SUBDIRS') ? 'all-recursive' : 'all-am')
4460 . "\n\n");
4461 }
4462 else
4463 {
4464 $output_all .= "all: " . (var ('SUBDIRS')
4465 ? 'all-recursive' : 'all-am') . "\n\n";
4466 }
4467 }
4470 # &do_check_merge_target ()
4471 # -------------------------
4472 # Handle check merge target specially.
4473 sub do_check_merge_target ()
4474 {
4475 # Include user-defined local form of target.
4476 push @check_tests, 'check-local'
4477 if user_phony_rule 'check-local';
4479 # In --cygnus mode, check doesn't depend on all.
4480 if (option 'cygnus')
4481 {
4482 # Just run the local check rules.
4483 pretty_print_rule ('check-am:', "\t\t", @check);
4484 }
4485 else
4486 {
4487 # The check target must depend on the local equivalent of
4488 # `all', to ensure all the primary targets are built. Then it
4489 # must build the local check rules.
4490 $output_rules .= "check-am: all-am\n";
4491 pretty_print_rule ("\t\$(MAKE) \$(AM_MAKEFLAGS)", "\t ",
4492 @check)
4493 if @check;
4494 }
4495 pretty_print_rule ("\t\$(MAKE) \$(AM_MAKEFLAGS)", "\t ",
4496 @check_tests)
4497 if @check_tests;
4499 depend '.PHONY', 'check', 'check-am';
4500 # Handle recursion. We have to honor BUILT_SOURCES like for `all:'.
4501 $output_rules .= ("check: "
4502 . (var ('BUILT_SOURCES')
4503 ? "\$(BUILT_SOURCES)\n\t\$(MAKE) \$(AM_MAKEFLAGS) "
4504 : '')
4505 . (var ('SUBDIRS') ? 'check-recursive' : 'check-am')
4506 . "\n");
4507 }
4509 # handle_clean ($MAKEFILE)
4510 # ------------------------
4511 # Handle all 'clean' targets.
4512 sub handle_clean ($)
4513 {
4514 my ($makefile) = @_;
4516 # Clean the files listed in user variables if they exist.
4517 $clean_files{'$(MOSTLYCLEANFILES)'} = MOSTLY_CLEAN
4518 if var ('MOSTLYCLEANFILES');
4519 $clean_files{'$(CLEANFILES)'} = CLEAN
4520 if var ('CLEANFILES');
4521 $clean_files{'$(DISTCLEANFILES)'} = DIST_CLEAN
4522 if var ('DISTCLEANFILES');
4523 $clean_files{'$(MAINTAINERCLEANFILES)'} = MAINTAINER_CLEAN
4524 if var ('MAINTAINERCLEANFILES');
4526 # Built sources are automatically removed by maintainer-clean.
4527 $clean_files{'$(BUILT_SOURCES)'} = MAINTAINER_CLEAN
4528 if var ('BUILT_SOURCES');
4530 # Compute a list of "rm"s to run for each target.
4531 my %rms = (MOSTLY_CLEAN, [],
4532 CLEAN, [],
4533 DIST_CLEAN, [],
4534 MAINTAINER_CLEAN, []);
4536 foreach my $file (keys %clean_files)
4537 {
4538 my $when = $clean_files{$file};
4539 prog_error 'invalid entry in %clean_files'
4540 unless exists $rms{$when};
4542 my $rm = "rm -f $file";
4543 # If file is a variable, make sure when don't call `rm -f' without args.
4544 $rm ="test -z \"$file\" || $rm"
4545 if ($file =~ /^\s*\$(\(.*\)|\{.*\})\s*$/);
4547 push @{$rms{$when}}, "\t-$rm\n";
4548 }
4550 $output_rules .= &file_contents
4551 ('clean',
4552 new Automake::Location,
4553 MOSTLYCLEAN_RMS => join ('', sort @{$rms{&MOSTLY_CLEAN}}),
4554 CLEAN_RMS => join ('', sort @{$rms{&CLEAN}}),
4555 DISTCLEAN_RMS => join ('', sort @{$rms{&DIST_CLEAN}}),
4556 MAINTAINER_CLEAN_RMS => join ('', sort @{$rms{&MAINTAINER_CLEAN}}),
4557 MAKEFILE => basename $makefile,
4558 );
4559 }
4562 # &target_cmp ($A, $B)
4563 # --------------------
4564 # Subroutine for &handle_factored_dependencies to let `.PHONY' and
4565 # other `.TARGETS' be last.
4566 sub target_cmp
4567 {
4568 return 0 if $a eq $b;
4570 my $a1 = substr ($a, 0, 1);
4571 my $b1 = substr ($b, 0, 1);
4572 if ($a1 ne $b1)
4573 {
4574 return -1 if $b1 eq '.';
4575 return 1 if $a1 eq '.';
4576 }
4577 return $a cmp $b;
4578 }
4581 # &handle_factored_dependencies ()
4582 # --------------------------------
4583 # Handle everything related to gathered targets.
4584 sub handle_factored_dependencies
4585 {
4586 # Reject bad hooks.
4587 foreach my $utarg ('uninstall-data-local', 'uninstall-data-hook',
4588 'uninstall-exec-local', 'uninstall-exec-hook',
4589 'uninstall-dvi-local',
4590 'uninstall-html-local',
4591 'uninstall-info-local',
4592 'uninstall-pdf-local',
4593 'uninstall-ps-local')
4594 {
4595 my $x = $utarg;
4596 $x =~ s/-.*-/-/;
4597 reject_rule ($utarg, "use `$x', not `$utarg'");
4598 }
4600 reject_rule ('install-local',
4601 "use `install-data-local' or `install-exec-local', "
4602 . "not `install-local'");
4604 reject_rule ('install-hook',
4605 "use `install-data-hook' or `install-exec-hook', "
4606 . "not `install-hook'");
4608 # Install the -local hooks.
4609 foreach (keys %dependencies)
4610 {
4611 # Hooks are installed on the -am targets.
4612 s/-am$// or next;
4613 depend ("$_-am", "$_-local")
4614 if user_phony_rule "$_-local";
4615 }
4617 # Install the -hook hooks.
4618 # FIXME: Why not be as liberal as we are with -local hooks?
4619 foreach ('install-exec', 'install-data', 'uninstall')
4620 {
4621 if (user_phony_rule "$_-hook")
4622 {
4623 depend ('.MAKE', "$_-am");
4624 register_action("$_-am",
4625 ("\t\@\$(NORMAL_INSTALL)\n"
4626 . "\t\$(MAKE) \$(AM_MAKEFLAGS) $_-hook"));
4627 }
4628 }
4630 # All the required targets are phony.
4631 depend ('.PHONY', keys %required_targets);
4633 # Actually output gathered targets.
4634 foreach (sort target_cmp keys %dependencies)
4635 {
4636 # If there is nothing about this guy, skip it.
4637 next
4638 unless (@{$dependencies{$_}}
4639 || $actions{$_}
4640 || $required_targets{$_});
4642 # Define gathered targets in undefined conditions.
4643 # FIXME: Right now we must handle .PHONY as an exception,
4644 # because people write things like
4645 # .PHONY: myphonytarget
4646 # to append dependencies. This would not work if Automake
4647 # refrained from defining its own .PHONY target as it does
4648 # with other overridden targets.
4649 # Likewise for `.MAKE'.
4650 my @undefined_conds = (TRUE,);
4651 if ($_ ne '.PHONY' && $_ ne '.MAKE')
4652 {
4653 @undefined_conds =
4654 Automake::Rule::define ($_, 'internal',
4655 RULE_AUTOMAKE, TRUE, INTERNAL);
4656 }
4657 my @uniq_deps = uniq (sort @{$dependencies{$_}});
4658 foreach my $cond (@undefined_conds)
4659 {
4660 my $condstr = $cond->subst_string;
4661 &pretty_print_rule ("$condstr$_:", "$condstr\t", @uniq_deps);
4662 $output_rules .= $actions{$_} if defined $actions{$_};
4663 $output_rules .= "\n";
4664 }
4665 }
4666 }
4669 # &handle_tests_dejagnu ()
4670 # ------------------------
4671 sub handle_tests_dejagnu
4672 {
4673 push (@check_tests, 'check-DEJAGNU');
4674 $output_rules .= file_contents ('dejagnu', new Automake::Location);
4675 }
4678 # Handle TESTS variable and other checks.
4679 sub handle_tests
4680 {
4681 if (option 'dejagnu')
4682 {
4683 &handle_tests_dejagnu;
4684 }
4685 else
4686 {
4687 foreach my $c ('DEJATOOL', 'RUNTEST', 'RUNTESTFLAGS')
4688 {
4689 reject_var ($c, "`$c' defined but `dejagnu' not in "
4690 . "`AUTOMAKE_OPTIONS'");
4691 }
4692 }
4694 if (var ('TESTS'))
4695 {
4696 push (@check_tests, 'check-TESTS');
4697 $output_rules .= &file_contents ('check', new Automake::Location,
4698 COLOR => !! option 'color-tests');
4700 # Tests that are known programs should have $(EXEEXT) appended.
4701 # For matching purposes, we need to adjust XFAIL_TESTS as well.
4702 append_exeext { exists $known_programs{$_[0]} } 'TESTS';
4703 append_exeext { exists $known_programs{$_[0]} } 'XFAIL_TESTS'
4704 if (var ('XFAIL_TESTS'));
4705 }
4706 }
4708 # Handle Emacs Lisp.
4709 sub handle_emacs_lisp
4710 {
4711 my @elfiles = &am_install_var ('-candist', 'lisp', 'LISP',
4712 'lisp', 'noinst');
4714 return if ! @elfiles;
4716 define_pretty_variable ('am__ELFILES', TRUE, INTERNAL,
4717 map { $_->[1] } @elfiles);
4718 define_pretty_variable ('am__ELCFILES', TRUE, INTERNAL,
4719 '$(am__ELFILES:.el=.elc)');
4720 # This one can be overridden by users.
4721 define_pretty_variable ('ELCFILES', TRUE, INTERNAL, '$(LISP:.el=.elc)');
4723 push @all, '$(ELCFILES)';
4725 require_variables ($elfiles[0][0], "Emacs Lisp sources seen", TRUE,
4726 'EMACS', 'lispdir');
4727 require_conf_file ($elfiles[0][0], FOREIGN, 'elisp-comp');
4728 &define_variable ('elisp_comp', "$am_config_aux_dir/elisp-comp", INTERNAL);
4729 }
4731 # Handle Python
4732 sub handle_python
4733 {
4734 my @pyfiles = &am_install_var ('-defaultdist', 'python', 'PYTHON',
4735 'noinst');
4736 return if ! @pyfiles;
4738 require_variables ($pyfiles[0][0], "Python sources seen", TRUE, 'PYTHON');
4739 require_conf_file ($pyfiles[0][0], FOREIGN, 'py-compile');
4740 &define_variable ('py_compile', "$am_config_aux_dir/py-compile", INTERNAL);
4741 }
4743 # Handle Java.
4744 sub handle_java
4745 {
4746 my @sourcelist = &am_install_var ('-candist',
4747 'java', 'JAVA',
4748 'java', 'noinst', 'check');
4749 return if ! @sourcelist;
4751 my @prefix = am_primary_prefixes ('JAVA', 1,
4752 'java', 'noinst', 'check');
4754 my $dir;
4755 foreach my $curs (@prefix)
4756 {
4757 next
4758 if $curs eq 'EXTRA';
4760 err_var "${curs}_JAVA", "multiple _JAVA primaries in use"
4761 if defined $dir;
4762 $dir = $curs;
4763 }
4766 push (@all, 'class' . $dir . '.stamp');
4767 }
4770 # Handle some of the minor options.
4771 sub handle_minor_options
4772 {
4773 if (option 'readme-alpha')
4774 {
4775 if ($relative_dir eq '.')
4776 {
4777 if ($package_version !~ /^$GNITS_VERSION_PATTERN$/)
4778 {
4779 msg ('error-gnits', $package_version_location,
4780 "version `$package_version' doesn't follow " .
4781 "Gnits standards");
4782 }
4783 if (defined $1 && -f 'README-alpha')
4784 {
4785 # This means we have an alpha release. See
4786 # GNITS_VERSION_PATTERN for details.
4787 push_dist_common ('README-alpha');
4788 }
4789 }
4790 }
4791 }
4793 ################################################################
4795 # ($OUTPUT, @INPUTS)
4796 # &split_config_file_spec ($SPEC)
4797 # -------------------------------
4798 # Decode the Autoconf syntax for config files (files, headers, links
4799 # etc.).
4800 sub split_config_file_spec ($)
4801 {
4802 my ($spec) = @_;
4803 my ($output, @inputs) = split (/:/, $spec);
4805 push @inputs, "$output.in"
4806 unless @inputs;
4808 return ($output, @inputs);
4809 }
4811 # $input
4812 # locate_am (@POSSIBLE_SOURCES)
4813 # -----------------------------
4814 # AC_CONFIG_FILES allow specifications such as Makefile:top.in:mid.in:bot.in
4815 # This functions returns the first *.in file for which a *.am exists.
4816 # It returns undef otherwise.
4817 sub locate_am (@)
4818 {
4819 my (@rest) = @_;
4820 my $input;
4821 foreach my $file (@rest)
4822 {
4823 if (($file =~ /^(.*)\.in$/) && -f "$1.am")
4824 {
4825 $input = $file;
4826 last;
4827 }
4828 }
4829 return $input;
4830 }
4832 my %make_list;
4834 # &scan_autoconf_config_files ($WHERE, $CONFIG-FILES)
4835 # ---------------------------------------------------
4836 # Study $CONFIG-FILES which is the first argument to AC_CONFIG_FILES
4837 # (or AC_OUTPUT).
4838 sub scan_autoconf_config_files ($$)
4839 {
4840 my ($where, $config_files) = @_;
4842 # Look at potential Makefile.am's.
4843 foreach (split ' ', $config_files)
4844 {
4845 # Must skip empty string for Perl 4.
4846 next if $_ eq "\\" || $_ eq '';
4848 # Handle $local:$input syntax.
4849 my ($local, @rest) = split (/:/);
4850 @rest = ("$local.in",) unless @rest;
4851 msg ('portability', $where,
4852 "Omit leading `./' from config file names such as `$local',"
4853 . "\nas not all make implementations treat `file' and `./file' equally.")
4854 if ($local =~ /^\.\//);
4855 my $input = locate_am @rest;
4856 if ($input)
4857 {
4858 # We have a file that automake should generate.
4859 $make_list{$input} = join (':', ($local, @rest));
4860 }
4861 else
4862 {
4863 # We have a file that automake should cause to be
4864 # rebuilt, but shouldn't generate itself.
4865 push (@other_input_files, $_);
4866 }
4867 $ac_config_files_location{$local} = $where;
4868 $ac_config_files_condition{$local} =
4869 new Automake::Condition (@cond_stack)
4870 if (@cond_stack);
4871 }
4872 }
4875 # &scan_autoconf_traces ($FILENAME)
4876 # ---------------------------------
4877 sub scan_autoconf_traces ($)
4878 {
4879 my ($filename) = @_;
4881 # Macros to trace, with their minimal number of arguments.
4882 #
4883 # IMPORTANT: If you add a macro here, you should also add this macro
4884 # ========= to Automake-preselection in autoconf/lib/autom4te.in.
4885 my %traced = (
4886 AC_CANONICAL_BUILD => 0,
4887 AC_CANONICAL_HOST => 0,
4888 AC_CANONICAL_TARGET => 0,
4889 AC_CONFIG_AUX_DIR => 1,
4890 AC_CONFIG_FILES => 1,
4891 AC_CONFIG_HEADERS => 1,
4892 AC_CONFIG_LIBOBJ_DIR => 1,
4893 AC_CONFIG_LINKS => 1,
4894 AC_FC_SRCEXT => 1,
4895 AC_INIT => 0,
4896 AC_LIBSOURCE => 1,
4897 AC_REQUIRE_AUX_FILE => 1,
4898 AC_SUBST_TRACE => 1,
4899 AM_AUTOMAKE_VERSION => 1,
4900 AM_CONDITIONAL => 2,
4901 AM_ENABLE_MULTILIB => 0,
4902 AM_GNU_GETTEXT => 0,
4903 AM_GNU_GETTEXT_INTL_SUBDIR => 0,
4904 AM_INIT_AUTOMAKE => 0,
4905 AM_MAINTAINER_MODE => 0,
4906 AM_PROG_CC_C_O => 0,
4907 _AM_SUBST_NOTMAKE => 1,
4908 _AM_COND_IF => 1,
4909 _AM_COND_ELSE => 1,
4910 _AM_COND_ENDIF => 1,
4911 LT_SUPPORTED_TAG => 1,
4912 _LT_AC_TAGCONFIG => 0,
4913 m4_include => 1,
4914 m4_sinclude => 1,
4915 sinclude => 1,
4916 );
4918 my $traces = ($ENV{AUTOCONF} || 'autoconf') . " ";
4920 # Use a separator unlikely to be used, not `:', the default, which
4921 # has a precise meaning for AC_CONFIG_FILES and so on.
4922 $traces .= join (' ',
4923 map { "--trace=$_" . ':\$f:\$l::\$d::\$n::\${::}%' }
4924 (keys %traced));
4926 my $tracefh = new Automake::XFile ("$traces $filename |");
4927 verb "reading $traces";
4929 @cond_stack = ();
4930 my $where;
4932 while ($_ = $tracefh->getline)
4933 {
4934 chomp;
4935 my ($here, $depth, @args) = split (/::/);
4936 $where = new Automake::Location $here;
4937 my $macro = $args[0];
4939 prog_error ("unrequested trace `$macro'")
4940 unless exists $traced{$macro};
4942 # Skip and diagnose malformed calls.
4943 if ($#args < $traced{$macro})
4944 {
4945 msg ('syntax', $where, "not enough arguments for $macro");
4946 next;
4947 }
4949 # Alphabetical ordering please.
4950 if ($macro eq 'AC_CANONICAL_BUILD')
4951 {
4952 if ($seen_canonical <= AC_CANONICAL_BUILD)
4953 {
4954 $seen_canonical = AC_CANONICAL_BUILD;
4955 $canonical_location = $where;
4956 }
4957 }
4958 elsif ($macro eq 'AC_CANONICAL_HOST')
4959 {
4960 if ($seen_canonical <= AC_CANONICAL_HOST)
4961 {
4962 $seen_canonical = AC_CANONICAL_HOST;
4963 $canonical_location = $where;
4964 }
4965 }
4966 elsif ($macro eq 'AC_CANONICAL_TARGET')
4967 {
4968 $seen_canonical = AC_CANONICAL_TARGET;
4969 $canonical_location = $where;
4970 }
4971 elsif ($macro eq 'AC_CONFIG_AUX_DIR')
4972 {
4973 if ($seen_init_automake)
4974 {
4975 error ($where, "AC_CONFIG_AUX_DIR must be called before "
4976 . "AM_INIT_AUTOMAKE...", partial => 1);
4977 error ($seen_init_automake, "... AM_INIT_AUTOMAKE called here");
4978 }
4979 $config_aux_dir = $args[1];
4980 $config_aux_dir_set_in_configure_ac = 1;
4981 $relative_dir = '.';
4982 check_directory ($config_aux_dir, $where);
4983 }
4984 elsif ($macro eq 'AC_CONFIG_FILES')
4985 {
4986 # Look at potential Makefile.am's.
4987 scan_autoconf_config_files ($where, $args[1]);
4988 }
4989 elsif ($macro eq 'AC_CONFIG_HEADERS')
4990 {
4991 foreach my $spec (split (' ', $args[1]))
4992 {
4993 my ($dest, @src) = split (':', $spec);
4994 $ac_config_files_location{$dest} = $where;
4995 push @config_headers, $spec;
4996 }
4997 }
4998 elsif ($macro eq 'AC_CONFIG_LIBOBJ_DIR')
4999 {
5000 $config_libobj_dir = $args[1];
5001 $relative_dir = '.';
5002 check_directory ($config_libobj_dir, $where);
5003 }
5004 elsif ($macro eq 'AC_CONFIG_LINKS')
5005 {
5006 foreach my $spec (split (' ', $args[1]))
5007 {
5008 my ($dest, $src) = split (':', $spec);
5009 $ac_config_files_location{$dest} = $where;
5010 push @config_links, $spec;
5011 }
5012 }
5013 elsif ($macro eq 'AC_FC_SRCEXT')
5014 {
5015 my $suffix = $args[1];
5016 # These flags are used as %SOURCEFLAG% in depend2.am,
5017 # where the trailing space is important.
5018 $sourceflags{'.' . $suffix} = '$(FCFLAGS_' . $suffix . ') '
5019 if ($suffix eq 'f90' || $suffix eq 'f95' || $suffix eq 'f03' || $suffix eq 'f08');
5020 }
5021 elsif ($macro eq 'AC_INIT')
5022 {
5023 if (defined $args[2])
5024 {
5025 $package_version = $args[2];
5026 $package_version_location = $where;
5027 }
5028 }
5029 elsif ($macro eq 'AC_LIBSOURCE')
5030 {
5031 $libsources{$args[1]} = $here;
5032 }
5033 elsif ($macro eq 'AC_REQUIRE_AUX_FILE')
5034 {
5035 # Only remember the first time a file is required.
5036 $required_aux_file{$args[1]} = $where
5037 unless exists $required_aux_file{$args[1]};
5038 }
5039 elsif ($macro eq 'AC_SUBST_TRACE')
5040 {
5041 # Just check for alphanumeric in AC_SUBST_TRACE. If you do
5042 # AC_SUBST(5), then too bad.
5043 $configure_vars{$args[1]} = $where
5044 if $args[1] =~ /^\w+$/;
5045 }
5046 elsif ($macro eq 'AM_AUTOMAKE_VERSION')
5047 {
5048 error ($where,
5049 "version mismatch. This is Automake $VERSION,\n" .
5050 "but the definition used by this AM_INIT_AUTOMAKE\n" .
5051 "comes from Automake $args[1]. You should recreate\n" .
5052 "aclocal.m4 with aclocal and run automake again.\n",
5053 # $? = 63 is used to indicate version mismatch to missing.
5054 exit_code => 63)
5055 if $VERSION ne $args[1];
5057 $seen_automake_version = 1;
5058 }
5059 elsif ($macro eq 'AM_CONDITIONAL')
5060 {
5061 $configure_cond{$args[1]} = $where;
5062 }
5063 elsif ($macro eq 'AM_ENABLE_MULTILIB')
5064 {
5065 $seen_multilib = $where;
5066 }
5067 elsif ($macro eq 'AM_GNU_GETTEXT')
5068 {
5069 $seen_gettext = $where;
5070 $ac_gettext_location = $where;
5071 $seen_gettext_external = grep ($_ eq 'external', @args);
5072 }
5073 elsif ($macro eq 'AM_GNU_GETTEXT_INTL_SUBDIR')
5074 {
5075 $seen_gettext_intl = $where;
5076 }
5077 elsif ($macro eq 'AM_INIT_AUTOMAKE')
5078 {
5079 $seen_init_automake = $where;
5080 if (defined $args[2])
5081 {
5082 $package_version = $args[2];
5083 $package_version_location = $where;
5084 }
5085 elsif (defined $args[1])
5086 {
5087 exit $exit_code
5088 if (process_global_option_list ($where,
5089 split (' ', $args[1])));
5090 }
5091 }
5092 elsif ($macro eq 'AM_MAINTAINER_MODE')
5093 {
5094 $seen_maint_mode = $where;
5095 }
5096 elsif ($macro eq 'AM_PROG_CC_C_O')
5097 {
5098 $seen_cc_c_o = $where;
5099 }
5100 elsif ($macro eq '_AM_COND_IF')
5101 {
5102 cond_stack_if ('', $args[1], $where);
5103 error ($where, "missing m4 quoting, macro depth $depth")
5104 if ($depth != 1);
5105 }
5106 elsif ($macro eq '_AM_COND_ELSE')
5107 {
5108 cond_stack_else ('!', $args[1], $where);
5109 error ($where, "missing m4 quoting, macro depth $depth")
5110 if ($depth != 1);
5111 }
5112 elsif ($macro eq '_AM_COND_ENDIF')
5113 {
5114 cond_stack_endif (undef, undef, $where);
5115 error ($where, "missing m4 quoting, macro depth $depth")
5116 if ($depth != 1);
5117 }
5118 elsif ($macro eq '_AM_SUBST_NOTMAKE')
5119 {
5120 $ignored_configure_vars{$args[1]} = $where;
5121 }
5122 elsif ($macro eq 'm4_include'
5123 || $macro eq 'm4_sinclude'
5124 || $macro eq 'sinclude')
5125 {
5126 # Skip missing `sinclude'd files.
5127 next if $macro ne 'm4_include' && ! -f $args[1];
5129 # Some modified versions of Autoconf don't use
5130 # frozen files. Consequently it's possible that we see all
5131 # m4_include's performed during Autoconf's startup.
5132 # Obviously we don't want to distribute Autoconf's files
5133 # so we skip absolute filenames here.
5134 push @configure_deps, '$(top_srcdir)/' . $args[1]
5135 unless $here =~ m,^(?:\w:)?[\\/],;
5136 # Keep track of the greatest timestamp.
5137 if (-e $args[1])
5138 {
5139 my $mtime = mtime $args[1];
5140 $configure_deps_greatest_timestamp = $mtime
5141 if $mtime > $configure_deps_greatest_timestamp;
5142 }
5143 }
5144 elsif ($macro eq 'LT_SUPPORTED_TAG')
5145 {
5146 $libtool_tags{$args[1]} = 1;
5147 $libtool_new_api = 1;
5148 }
5149 elsif ($macro eq '_LT_AC_TAGCONFIG')
5150 {
5151 # _LT_AC_TAGCONFIG is an old macro present in Libtool 1.5.
5152 # We use it to detect whether tags are supported. Our
5153 # preferred interface is LT_SUPPORTED_TAG, but it was
5154 # introduced in Libtool 1.6.
5155 if (0 == keys %libtool_tags)
5156 {
5157 # Hardcode the tags supported by Libtool 1.5.
5158 %libtool_tags = (CC => 1, CXX => 1, GCJ => 1, F77 => 1);
5159 }
5160 }
5161 }
5163 error ($where, "condition stack not properly closed")
5164 if (@cond_stack);
5166 $tracefh->close;
5167 }
5170 # &scan_autoconf_files ()
5171 # -----------------------
5172 # Check whether we use `configure.ac' or `configure.in'.
5173 # Scan it (and possibly `aclocal.m4') for interesting things.
5174 # We must scan aclocal.m4 because there might be AC_SUBSTs and such there.
5175 sub scan_autoconf_files ()
5176 {
5177 # Reinitialize libsources here. This isn't really necessary,
5178 # since we currently assume there is only one configure.ac. But
5179 # that won't always be the case.
5180 %libsources = ();
5182 # Keep track of the youngest configure dependency.
5183 $configure_deps_greatest_timestamp = mtime $configure_ac;
5184 if (-e 'aclocal.m4')
5185 {
5186 my $mtime = mtime 'aclocal.m4';
5187 $configure_deps_greatest_timestamp = $mtime
5188 if $mtime > $configure_deps_greatest_timestamp;
5189 }
5191 scan_autoconf_traces ($configure_ac);
5193 @configure_input_files = sort keys %make_list;
5194 # Set input and output files if not specified by user.
5195 if (! @input_files)
5196 {
5197 @input_files = @configure_input_files;
5198 %output_files = %make_list;
5199 }
5202 if (! $seen_init_automake)
5203 {
5204 err_ac ("no proper invocation of AM_INIT_AUTOMAKE was found.\nYou "
5205 . "should verify that $configure_ac invokes AM_INIT_AUTOMAKE,"
5206 . "\nthat aclocal.m4 is present in the top-level directory,\n"
5207 . "and that aclocal.m4 was recently regenerated "
5208 . "(using aclocal).");
5209 }
5210 else
5211 {
5212 if (! $seen_automake_version)
5213 {
5214 if (-f 'aclocal.m4')
5215 {
5216 error ($seen_init_automake,
5217 "your implementation of AM_INIT_AUTOMAKE comes from " .
5218 "an\nold Automake version. You should recreate " .
5219 "aclocal.m4\nwith aclocal and run automake again.\n",
5220 # $? = 63 is used to indicate version mismatch to missing.
5221 exit_code => 63);
5222 }
5223 else
5224 {
5225 error ($seen_init_automake,
5226 "no proper implementation of AM_INIT_AUTOMAKE was " .
5227 "found,\nprobably because aclocal.m4 is missing...\n" .
5228 "You should run aclocal to create this file, then\n" .
5229 "run automake again.\n");
5230 }
5231 }
5232 }
5234 locate_aux_dir ();
5236 # Reorder @input_files so that the Makefile that distributes aux
5237 # files is processed last. This is important because each directory
5238 # can require auxiliary scripts and we should wait until they have
5239 # been installed before distributing them.
5241 # The Makefile.in that distribute the aux files is the one in
5242 # $config_aux_dir or the top-level Makefile.
5243 my $auxdirdist = is_make_dir ($config_aux_dir) ? $config_aux_dir : '.';
5244 my @new_input_files = ();
5245 while (@input_files)
5246 {
5247 my $in = pop @input_files;
5248 my @ins = split (/:/, $output_files{$in});
5249 if (dirname ($ins[0]) eq $auxdirdist)
5250 {
5251 push @new_input_files, $in;
5252 $automake_will_process_aux_dir = 1;
5253 }
5254 else
5255 {
5256 unshift @new_input_files, $in;
5257 }
5258 }
5259 @input_files = @new_input_files;
5261 # If neither the auxdir/Makefile nor the ./Makefile are generated
5262 # by Automake, we won't distribute the aux files anyway. Assume
5263 # the user know what (s)he does, and pretend we will distribute
5264 # them to disable the error in require_file_internal.
5265 $automake_will_process_aux_dir = 1 if ! is_make_dir ($auxdirdist);
5267 # Look for some files we need. Always check for these. This
5268 # check must be done for every run, even those where we are only
5269 # looking at a subdir Makefile. We must set relative_dir for
5270 # maybe_push_required_file to work.
5271 # Sort the files for stable verbose output.
5272 $relative_dir = '.';
5273 foreach my $file (sort keys %required_aux_file)
5274 {
5275 require_conf_file ($required_aux_file{$file}->get, FOREIGN, $file)
5276 }
5277 err_am "`install.sh' is an anachronism; use `install-sh' instead"
5278 if -f $config_aux_dir . '/install.sh';
5280 # Preserve dist_common for later.
5281 $configure_dist_common = variable_value ('DIST_COMMON') || '';
5283 }
5285 ################################################################
5287 # Set up for Cygnus mode.
5288 sub check_cygnus
5289 {
5290 my $cygnus = option 'cygnus';
5291 return unless $cygnus;
5293 set_strictness ('foreign');
5294 set_option ('no-installinfo', $cygnus);
5295 set_option ('no-dependencies', $cygnus);
5296 set_option ('no-dist', $cygnus);
5298 err_ac "`AM_MAINTAINER_MODE' required when --cygnus specified"
5299 if !$seen_maint_mode;
5300 }
5302 # Do any extra checking for GNU standards.
5303 sub check_gnu_standards
5304 {
5305 if ($relative_dir eq '.')
5306 {
5307 # In top level (or only) directory.
5308 require_file ("$am_file.am", GNU,
5309 qw/INSTALL NEWS README AUTHORS ChangeLog/);
5311 # Accept one of these three licenses; default to COPYING.
5312 # Make sure we do not overwrite an existing license.
5313 my $license;
5314 foreach (qw /COPYING COPYING.LIB COPYING.LESSER/)
5315 {
5316 if (-f $_)
5317 {
5318 $license = $_;
5319 last;
5320 }
5321 }
5322 require_file ("$am_file.am", GNU, 'COPYING')
5323 unless $license;
5324 }
5326 for my $opt ('no-installman', 'no-installinfo')
5327 {
5328 msg ('error-gnu', option $opt,
5329 "option `$opt' disallowed by GNU standards")
5330 if option $opt;
5331 }
5332 }
5334 # Do any extra checking for GNITS standards.
5335 sub check_gnits_standards
5336 {
5337 if ($relative_dir eq '.')
5338 {
5339 # In top level (or only) directory.
5340 require_file ("$am_file.am", GNITS, 'THANKS');
5341 }
5342 }
5344 ################################################################
5345 #
5346 # Functions to handle files of each language.
5348 # Each `lang_X_rewrite($DIRECTORY, $BASE, $EXT)' function follows a
5349 # simple formula: Return value is LANG_SUBDIR if the resulting object
5350 # file should be in a subdir if the source file is, LANG_PROCESS if
5351 # file is to be dealt with, LANG_IGNORE otherwise.
5353 # Much of the actual processing is handled in
5354 # handle_single_transform. These functions exist so that
5355 # auxiliary information can be recorded for a later cleanup pass.
5356 # Note that the calls to these functions are computed, so don't bother
5357 # searching for their precise names in the source.
5359 # This is just a convenience function that can be used to determine
5360 # when a subdir object should be used.
5361 sub lang_sub_obj
5362 {
5363 return option 'subdir-objects' ? LANG_SUBDIR : LANG_PROCESS;
5364 }
5366 # Rewrite a single C source file.
5367 sub lang_c_rewrite
5368 {
5369 my ($directory, $base, $ext, $nonansi_obj, $have_per_exec_flags, $var) = @_;
5371 if (option 'ansi2knr' && $base =~ /_$/)
5372 {
5373 # FIXME: include line number in error.
5374 err_am "C source file `$base.c' would be deleted by ansi2knr rules";
5375 }
5377 my $r = LANG_PROCESS;
5378 if (option 'subdir-objects')
5379 {
5380 $r = LANG_SUBDIR;
5381 if ($directory && $directory ne '.')
5382 {
5383 $base = $directory . '/' . $base;
5385 # libtool is always able to put the object at the proper place,
5386 # so we do not have to require AM_PROG_CC_C_O when building .lo files.
5387 msg_var ('portability', $var,
5388 "compiling `$base.c' in subdir requires "
5389 . "`AM_PROG_CC_C_O' in `$configure_ac'",
5390 uniq_scope => US_GLOBAL,
5391 uniq_part => 'AM_PROG_CC_C_O subdir')
5392 unless $seen_cc_c_o || $nonansi_obj eq '.lo';
5393 }
5395 # In this case we already have the directory information, so
5396 # don't add it again.
5397 $de_ansi_files{$base} = '';
5398 }
5399 else
5400 {
5401 $de_ansi_files{$base} = (($directory eq '.' || $directory eq '')
5402 ? ''
5403 : "$directory/");
5404 }
5406 if (! $seen_cc_c_o
5407 && $have_per_exec_flags
5408 && ! option 'subdir-objects'
5409 && $nonansi_obj ne '.lo')
5410 {
5411 msg_var ('portability',
5412 $var, "compiling `$base.c' with per-target flags requires "
5413 . "`AM_PROG_CC_C_O' in `$configure_ac'",
5414 uniq_scope => US_GLOBAL,
5415 uniq_part => 'AM_PROG_CC_C_O per-target')
5416 }
5418 return $r;
5419 }
5421 # Rewrite a single C++ source file.
5422 sub lang_cxx_rewrite
5423 {
5424 return &lang_sub_obj;
5425 }
5427 # Rewrite a single header file.
5428 sub lang_header_rewrite
5429 {
5430 # Header files are simply ignored.
5431 return LANG_IGNORE;
5432 }
5434 # Rewrite a single yacc file.
5435 sub lang_yacc_rewrite
5436 {
5437 my ($directory, $base, $ext) = @_;
5439 my $r = &lang_sub_obj;
5440 (my $newext = $ext) =~ tr/y/c/;
5441 return ($r, $newext);
5442 }
5444 # Rewrite a single yacc++ file.
5445 sub lang_yaccxx_rewrite
5446 {
5447 my ($directory, $base, $ext) = @_;
5449 my $r = &lang_sub_obj;
5450 (my $newext = $ext) =~ tr/y/c/;
5451 return ($r, $newext);
5452 }
5454 # Rewrite a single lex file.
5455 sub lang_lex_rewrite
5456 {
5457 my ($directory, $base, $ext) = @_;
5459 my $r = &lang_sub_obj;
5460 (my $newext = $ext) =~ tr/l/c/;
5461 return ($r, $newext);
5462 }
5464 # Rewrite a single lex++ file.
5465 sub lang_lexxx_rewrite
5466 {
5467 my ($directory, $base, $ext) = @_;
5469 my $r = &lang_sub_obj;
5470 (my $newext = $ext) =~ tr/l/c/;
5471 return ($r, $newext);
5472 }
5474 # Rewrite a single assembly file.
5475 sub lang_asm_rewrite
5476 {
5477 return &lang_sub_obj;
5478 }
5480 # Rewrite a single preprocessed assembly file.
5481 sub lang_cppasm_rewrite
5482 {
5483 return &lang_sub_obj;
5484 }
5486 # Rewrite a single Fortran 77 file.
5487 sub lang_f77_rewrite
5488 {
5489 return &lang_sub_obj;
5490 }
5492 # Rewrite a single Fortran file.
5493 sub lang_fc_rewrite
5494 {
5495 return &lang_sub_obj;
5496 }
5498 # Rewrite a single preprocessed Fortran file.
5499 sub lang_ppfc_rewrite
5500 {
5501 return &lang_sub_obj;
5502 }
5504 # Rewrite a single preprocessed Fortran 77 file.
5505 sub lang_ppf77_rewrite
5506 {
5507 return &lang_sub_obj;
5508 }
5510 # Rewrite a single ratfor file.
5511 sub lang_ratfor_rewrite
5512 {
5513 return &lang_sub_obj;
5514 }
5516 # Rewrite a single Objective C file.
5517 sub lang_objc_rewrite
5518 {
5519 return &lang_sub_obj;
5520 }
5522 # Rewrite a single Unified Parallel C file.
5523 sub lang_upc_rewrite
5524 {
5525 return &lang_sub_obj;
5526 }
5528 # Rewrite a single Java file.
5529 sub lang_java_rewrite
5530 {
5531 return LANG_SUBDIR;
5532 }
5534 # The lang_X_finish functions are called after all source file
5535 # processing is done. Each should handle defining rules for the
5536 # language, etc. A finish function is only called if a source file of
5537 # the appropriate type has been seen.
5539 sub lang_c_finish
5540 {
5541 # Push all libobjs files onto de_ansi_files. We actually only
5542 # push files which exist in the current directory, and which are
5543 # genuine source files.
5544 foreach my $file (keys %libsources)
5545 {
5546 if ($file =~ /^(.*)\.[cly]$/ && -f "$relative_dir/$file")
5547 {
5548 $de_ansi_files{$1} = ''
5549 }
5550 }
5552 if (option 'ansi2knr' && keys %de_ansi_files)
5553 {
5554 # Make all _.c files depend on their corresponding .c files.
5555 my @objects;
5556 foreach my $base (sort keys %de_ansi_files)
5557 {
5558 # Each _.c file must depend on ansi2knr; otherwise it
5559 # might be used in a parallel build before it is built.
5560 # We need to support files in the srcdir and in the build
5561 # dir (because these files might be auto-generated. But
5562 # we can't use $< -- some makes only define $< during a
5563 # suffix rule.
5564 my $ansfile = $de_ansi_files{$base} . $base . '.c';
5565 $output_rules .= ($base . "_.c: $ansfile \$(ANSI2KNR)\n\t"
5566 . '$(CPP) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) '
5567 . '`if test -f $(srcdir)/' . $ansfile
5568 . '; then echo $(srcdir)/' . $ansfile
5569 . '; else echo ' . $ansfile . '; fi` '
5570 . "| sed 's/^# \\([0-9]\\)/#line \\1/' "
5571 . '| $(ANSI2KNR) > $@'
5572 # If ansi2knr fails then we shouldn't
5573 # create the _.c file
5574 . " || rm -f \$\@\n");
5575 push (@objects, $base . '_.$(OBJEXT)');
5576 push (@objects, $base . '_.lo')
5577 if var ('LIBTOOL');
5579 # Explicitly clean the _.c files if they are in a
5580 # subdirectory. (In the current directory they get erased
5581 # by a `rm -f *_.c' rule.)
5582 $clean_files{$base . '_.c'} = MOSTLY_CLEAN
5583 if dirname ($base) ne '.';
5584 }
5586 # Make all _.o (and _.lo) files depend on ansi2knr.
5587 # Use a sneaky little hack to make it print nicely.
5588 &pretty_print_rule ('', '', @objects, ':', '$(ANSI2KNR)');
5589 }
5590 }
5592 # This is a yacc helper which is called whenever we have decided to
5593 # compile a yacc file.
5594 sub lang_yacc_target_hook
5595 {
5596 my ($self, $aggregate, $output, $input, %transform) = @_;
5598 my $flag = $aggregate . "_YFLAGS";
5599 my $flagvar = var $flag;
5600 my $YFLAGSvar = var 'YFLAGS';
5601 if (($flagvar && $flagvar->variable_value =~ /$DASH_D_PATTERN/o)
5602 || ($YFLAGSvar && $YFLAGSvar->variable_value =~ /$DASH_D_PATTERN/o))
5603 {
5604 (my $output_base = $output) =~ s/$KNOWN_EXTENSIONS_PATTERN$//;
5605 my $header = $output_base . '.h';
5607 # Found a `-d' that applies to the compilation of this file.
5608 # Add a dependency for the generated header file, and arrange
5609 # for that file to be included in the distribution.
5610 foreach my $cond (Automake::Rule::define (${header}, 'internal',
5611 RULE_AUTOMAKE, TRUE,
5612 INTERNAL))
5613 {
5614 my $condstr = $cond->subst_string;
5615 $output_rules .=
5616 "$condstr${header}: $output\n"
5617 # Recover from removal of $header
5618 . "$condstr\t\@if test ! -f \$@; then \\\n"
5619 . "$condstr\t rm -f $output; \\\n"
5620 . "$condstr\t \$(MAKE) \$(AM_MAKEFLAGS) $output; \\\n"
5621 . "$condstr\telse :; fi\n";
5622 }
5623 # Distribute the generated file, unless its .y source was
5624 # listed in a nodist_ variable. (&handle_source_transform
5625 # will set DIST_SOURCE.)
5626 &push_dist_common ($header)
5627 if $transform{'DIST_SOURCE'};
5629 # If the files are built in the build directory, then we want
5630 # to remove them with `make clean'. If they are in srcdir
5631 # they shouldn't be touched. However, we can't determine this
5632 # statically, and the GNU rules say that yacc/lex output files
5633 # should be removed by maintainer-clean. So that's what we
5634 # do.
5635 $clean_files{$header} = MAINTAINER_CLEAN;
5636 }
5637 # Erase $OUTPUT on `make maintainer-clean' (by GNU standards).
5638 # See the comment above for $HEADER.
5639 $clean_files{$output} = MAINTAINER_CLEAN;
5640 }
5642 # This is a lex helper which is called whenever we have decided to
5643 # compile a lex file.
5644 sub lang_lex_target_hook
5645 {
5646 my ($self, $aggregate, $output, $input) = @_;
5647 # If the files are built in the build directory, then we want to
5648 # remove them with `make clean'. If they are in srcdir they
5649 # shouldn't be touched. However, we can't determine this
5650 # statically, and the GNU rules say that yacc/lex output files
5651 # should be removed by maintainer-clean. So that's what we do.
5652 $clean_files{$output} = MAINTAINER_CLEAN;
5653 }
5655 # This is a helper for both lex and yacc.
5656 sub yacc_lex_finish_helper
5657 {
5658 return if defined $language_scratch{'lex-yacc-done'};
5659 $language_scratch{'lex-yacc-done'} = 1;
5661 # FIXME: for now, no line number.
5662 require_conf_file ($configure_ac, FOREIGN, 'ylwrap');
5663 &define_variable ('YLWRAP', "$am_config_aux_dir/ylwrap", INTERNAL);
5664 }
5666 sub lang_yacc_finish
5667 {
5668 return if defined $language_scratch{'yacc-done'};
5669 $language_scratch{'yacc-done'} = 1;
5671 reject_var 'YACCFLAGS', "`YACCFLAGS' obsolete; use `YFLAGS' instead";
5673 yacc_lex_finish_helper;
5674 }
5677 sub lang_lex_finish
5678 {
5679 return if defined $language_scratch{'lex-done'};
5680 $language_scratch{'lex-done'} = 1;
5682 yacc_lex_finish_helper;
5683 }
5686 # Given a hash table of linker names, pick the name that has the most
5687 # precedence. This is lame, but something has to have global
5688 # knowledge in order to eliminate the conflict. Add more linkers as
5689 # required.
5690 sub resolve_linker
5691 {
5692 my (%linkers) = @_;
5694 foreach my $l (qw(GCJLINK CXXLINK F77LINK FCLINK OBJCLINK UPCLINK))
5695 {
5696 return $l if defined $linkers{$l};
5697 }
5698 return 'LINK';
5699 }
5701 # Called to indicate that an extension was used.
5702 sub saw_extension
5703 {
5704 my ($ext) = @_;
5705 if (! defined $extension_seen{$ext})
5706 {
5707 $extension_seen{$ext} = 1;
5708 }
5709 else
5710 {
5711 ++$extension_seen{$ext};
5712 }
5713 }
5715 # Return the number of files seen for a given language. Knows about
5716 # special cases we care about. FIXME: this is hideous. We need
5717 # something that involves real language objects. For instance yacc
5718 # and yaccxx could both derive from a common yacc class which would
5719 # know about the strange ylwrap requirement. (Or better yet we could
5720 # just not support legacy yacc!)
5721 sub count_files_for_language
5722 {
5723 my ($name) = @_;
5725 my @names;
5726 if ($name eq 'yacc' || $name eq 'yaccxx')
5727 {
5728 @names = ('yacc', 'yaccxx');
5729 }
5730 elsif ($name eq 'lex' || $name eq 'lexxx')
5731 {
5732 @names = ('lex', 'lexxx');
5733 }
5734 else
5735 {
5736 @names = ($name);
5737 }
5739 my $r = 0;
5740 foreach $name (@names)
5741 {
5742 my $lang = $languages{$name};
5743 foreach my $ext (@{$lang->extensions})
5744 {
5745 $r += $extension_seen{$ext}
5746 if defined $extension_seen{$ext};
5747 }
5748 }
5750 return $r
5751 }
5753 # Called to ask whether source files have been seen . If HEADERS is 1,
5754 # headers can be included.
5755 sub saw_sources_p
5756 {
5757 my ($headers) = @_;
5759 # count all the sources
5760 my $count = 0;
5761 foreach my $val (values %extension_seen)
5762 {
5763 $count += $val;
5764 }
5766 if (!$headers)
5767 {
5768 $count -= count_files_for_language ('header');
5769 }
5771 return $count > 0;
5772 }
5775 # register_language (%ATTRIBUTE)
5776 # ------------------------------
5777 # Register a single language.
5778 # Each %ATTRIBUTE is of the form ATTRIBUTE => VALUE.
5779 sub register_language (%)
5780 {
5781 my (%option) = @_;
5783 # Set the defaults.
5784 $option{'ansi'} = 0
5785 unless defined $option{'ansi'};
5786 $option{'autodep'} = 'no'
5787 unless defined $option{'autodep'};
5788 $option{'linker'} = ''
5789 unless defined $option{'linker'};
5790 $option{'flags'} = []
5791 unless defined $option{'flags'};
5792 $option{'output_extensions'} = sub { return ( '.$(OBJEXT)', '.lo' ) }
5793 unless defined $option{'output_extensions'};
5794 $option{'nodist_specific'} = 0
5795 unless defined $option{'nodist_specific'};
5797 my $lang = new Language (%option);
5799 # Fill indexes.
5800 $extension_map{$_} = $lang->name foreach @{$lang->extensions};
5801 $languages{$lang->name} = $lang;
5802 my $link = $lang->linker;
5803 if ($link)
5804 {
5805 if (exists $link_languages{$link})
5806 {
5807 prog_error ("`$link' has different definitions in "
5808 . $lang->name . " and " . $link_languages{$link}->name)
5809 if $lang->link ne $link_languages{$link}->link;
5810 }
5811 else
5812 {
5813 $link_languages{$link} = $lang;
5814 }
5815 }
5817 # Update the pattern of known extensions.
5818 accept_extensions (@{$lang->extensions});
5820 # Upate the $suffix_rule map.
5821 foreach my $suffix (@{$lang->extensions})
5822 {
5823 foreach my $dest (&{$lang->output_extensions} ($suffix))
5824 {
5825 register_suffix_rule (INTERNAL, $suffix, $dest);
5826 }
5827 }
5828 }
5830 # derive_suffix ($EXT, $OBJ)
5831 # --------------------------
5832 # This function is used to find a path from a user-specified suffix $EXT
5833 # to $OBJ or to some other suffix we recognize internally, e.g. `cc'.
5834 sub derive_suffix ($$)
5835 {
5836 my ($source_ext, $obj) = @_;
5838 while (! $extension_map{$source_ext}
5839 && $source_ext ne $obj
5840 && exists $suffix_rules->{$source_ext}
5841 && exists $suffix_rules->{$source_ext}{$obj})
5842 {
5843 $source_ext = $suffix_rules->{$source_ext}{$obj}[0];
5844 }
5846 return $source_ext;
5847 }
5850 ################################################################
5852 # Pretty-print something and append to output_rules.
5853 sub pretty_print_rule
5854 {
5855 $output_rules .= &makefile_wrap (@_);
5856 }
5859 ################################################################
5862 ## -------------------------------- ##
5863 ## Handling the conditional stack. ##
5864 ## -------------------------------- ##
5867 # $STRING
5868 # make_conditional_string ($NEGATE, $COND)
5869 # ----------------------------------------
5870 sub make_conditional_string ($$)
5871 {
5872 my ($negate, $cond) = @_;
5873 $cond = "${cond}_TRUE"
5874 unless $cond =~ /^TRUE|FALSE$/;
5875 $cond = Automake::Condition::conditional_negate ($cond)
5876 if $negate;
5877 return $cond;
5878 }
5881 my %_am_macro_for_cond =
5882 (
5883 AMDEP => "one of the compiler tests\n"
5884 . " AC_PROG_CC, AC_PROG_CXX, AC_PROG_CXX, AC_PROG_OBJC,\n"
5885 . " AM_PROG_AS, AM_PROG_GCJ, AM_PROG_UPC",
5886 am__fastdepCC => 'AC_PROG_CC',
5887 am__fastdepCCAS => 'AM_PROG_AS',
5888 am__fastdepCXX => 'AC_PROG_CXX',
5889 am__fastdepGCJ => 'AM_PROG_GCJ',
5890 am__fastdepOBJC => 'AC_PROG_OBJC',
5891 am__fastdepUPC => 'AM_PROG_UPC'
5892 );
5894 # $COND
5895 # cond_stack_if ($NEGATE, $COND, $WHERE)
5896 # --------------------------------------
5897 sub cond_stack_if ($$$)
5898 {
5899 my ($negate, $cond, $where) = @_;
5901 if (! $configure_cond{$cond} && $cond !~ /^TRUE|FALSE$/)
5902 {
5903 my $text = "$cond does not appear in AM_CONDITIONAL";
5904 my $scope = US_LOCAL;
5905 if (exists $_am_macro_for_cond{$cond})
5906 {
5907 my $mac = $_am_macro_for_cond{$cond};
5908 $text .= "\n The usual way to define `$cond' is to add ";
5909 $text .= ($mac =~ / /) ? $mac : "`$mac'";
5910 $text .= "\n to `$configure_ac' and run `aclocal' and `autoconf' again.";
5911 # These warnings appear in Automake files (depend2.am),
5912 # so there is no need to display them more than once:
5913 $scope = US_GLOBAL;
5914 }
5915 error $where, $text, uniq_scope => $scope;
5916 }
5918 push (@cond_stack, make_conditional_string ($negate, $cond));
5920 return new Automake::Condition (@cond_stack);
5921 }
5924 # $COND
5925 # cond_stack_else ($NEGATE, $COND, $WHERE)
5926 # ----------------------------------------
5927 sub cond_stack_else ($$$)
5928 {
5929 my ($negate, $cond, $where) = @_;
5931 if (! @cond_stack)
5932 {
5933 error $where, "else without if";
5934 return FALSE;
5935 }
5937 $cond_stack[$#cond_stack] =
5938 Automake::Condition::conditional_negate ($cond_stack[$#cond_stack]);
5940 # If $COND is given, check against it.
5941 if (defined $cond)
5942 {
5943 $cond = make_conditional_string ($negate, $cond);
5945 error ($where, "else reminder ($negate$cond) incompatible with "
5946 . "current conditional: $cond_stack[$#cond_stack]")
5947 if $cond_stack[$#cond_stack] ne $cond;
5948 }
5950 return new Automake::Condition (@cond_stack);
5951 }
5954 # $COND
5955 # cond_stack_endif ($NEGATE, $COND, $WHERE)
5956 # -----------------------------------------
5957 sub cond_stack_endif ($$$)
5958 {
5959 my ($negate, $cond, $where) = @_;
5960 my $old_cond;
5962 if (! @cond_stack)
5963 {
5964 error $where, "endif without if";
5965 return TRUE;
5966 }
5968 # If $COND is given, check against it.
5969 if (defined $cond)
5970 {
5971 $cond = make_conditional_string ($negate, $cond);
5973 error ($where, "endif reminder ($negate$cond) incompatible with "
5974 . "current conditional: $cond_stack[$#cond_stack]")
5975 if $cond_stack[$#cond_stack] ne $cond;
5976 }
5978 pop @cond_stack;
5980 return new Automake::Condition (@cond_stack);
5981 }
5987 ## ------------------------ ##
5988 ## Handling the variables. ##
5989 ## ------------------------ ##
5992 # &define_pretty_variable ($VAR, $COND, $WHERE, @VALUE)
5993 # -----------------------------------------------------
5994 # Like define_variable, but the value is a list, and the variable may
5995 # be defined conditionally. The second argument is the Condition
5996 # under which the value should be defined; this should be the empty
5997 # string to define the variable unconditionally. The third argument
5998 # is a list holding the values to use for the variable. The value is
5999 # pretty printed in the output file.
6000 sub define_pretty_variable ($$$@)
6001 {
6002 my ($var, $cond, $where, @value) = @_;
6004 if (! vardef ($var, $cond))
6005 {
6006 Automake::Variable::define ($var, VAR_AUTOMAKE, '', $cond, "@value",
6007 '', $where, VAR_PRETTY);
6008 rvar ($var)->rdef ($cond)->set_seen;
6009 }
6010 }
6013 # define_variable ($VAR, $VALUE, $WHERE)
6014 # --------------------------------------
6015 # Define a new Automake Makefile variable VAR to VALUE, but only if
6016 # not already defined.
6017 sub define_variable ($$$)
6018 {
6019 my ($var, $value, $where) = @_;
6020 define_pretty_variable ($var, TRUE, $where, $value);
6021 }
6024 # define_files_variable ($VAR, \@BASENAME, $EXTENSION, $WHERE)
6025 # -----------------------------------------------------------
6026 # Define the $VAR which content is the list of file names composed of
6027 # a @BASENAME and the $EXTENSION.
6028 sub define_files_variable ($\@$$)
6029 {
6030 my ($var, $basename, $extension, $where) = @_;
6031 define_variable ($var,
6032 join (' ', map { "$_.$extension" } @$basename),
6033 $where);
6034 }
6037 # Like define_variable, but define a variable to be the configure
6038 # substitution by the same name.
6039 sub define_configure_variable ($)
6040 {
6041 my ($var) = @_;
6043 my $pretty = VAR_ASIS;
6044 my $owner = VAR_CONFIGURE;
6046 # Some variables we do not want to output. For instance it
6047 # would be a bad idea to output `U = @U@` when `@U@` can be
6048 # substituted as `\`.
6049 $pretty = VAR_SILENT if exists $ignored_configure_vars{$var};
6051 # ANSI2KNR is a variable that Automake wants to redefine, so
6052 # it must be owned by Automake. (It is also used as a proof
6053 # that AM_C_PROTOTYPES has been run, that's why we do not simply
6054 # omit the AC_SUBST.)
6055 $owner = VAR_AUTOMAKE if $var eq 'ANSI2KNR';
6057 Automake::Variable::define ($var, $owner, '', TRUE, subst $var,
6058 '', $configure_vars{$var}, $pretty);
6059 }
6062 # define_compiler_variable ($LANG)
6063 # --------------------------------
6064 # Define a compiler variable. We also handle defining the `LT'
6065 # version of the command when using libtool.
6066 sub define_compiler_variable ($)
6067 {
6068 my ($lang) = @_;
6070 my ($var, $value) = ($lang->compiler, $lang->compile);
6071 my $libtool_tag = '';
6072 $libtool_tag = '--tag=' . $lang->libtool_tag . ' '
6073 if $lang->libtool_tag && exists $libtool_tags{$lang->libtool_tag};
6074 &define_variable ($var, $value, INTERNAL);
6075 &define_variable ("LT$var",
6076 "\$(LIBTOOL) $libtool_tag\$(AM_LIBTOOLFLAGS) "
6077 . "\$(LIBTOOLFLAGS) --mode=compile $value",
6078 INTERNAL)
6079 if var ('LIBTOOL');
6080 }
6083 # define_linker_variable ($LANG)
6084 # ------------------------------
6085 # Define linker variables.
6086 sub define_linker_variable ($)
6087 {
6088 my ($lang) = @_;
6090 my $libtool_tag = '';
6091 $libtool_tag = '--tag=' . $lang->libtool_tag . ' '
6092 if $lang->libtool_tag && exists $libtool_tags{$lang->libtool_tag};
6093 # CCLD = $(CC).
6094 &define_variable ($lang->lder, $lang->ld, INTERNAL);
6095 # CCLINK = $(CCLD) blah blah...
6096 &define_variable ($lang->linker,
6097 ((var ('LIBTOOL') ?
6098 "\$(LIBTOOL) $libtool_tag\$(AM_LIBTOOLFLAGS) "
6099 . "\$(LIBTOOLFLAGS) --mode=link " : '')
6100 . $lang->link),
6101 INTERNAL);
6102 }
6104 sub define_per_target_linker_variable ($$)
6105 {
6106 my ($linker, $target) = @_;
6108 # If the user wrote a custom link command, we don't define ours.
6109 return "${target}_LINK"
6110 if set_seen "${target}_LINK";
6112 my $xlink = $linker ? $linker : 'LINK';
6114 my $lang = $link_languages{$xlink};
6115 prog_error "Unknown language for linker variable `$xlink'"
6116 unless $lang;
6118 my $link_command = $lang->link;
6119 if (var 'LIBTOOL')
6120 {
6121 my $libtool_tag = '';
6122 $libtool_tag = '--tag=' . $lang->libtool_tag . ' '
6123 if $lang->libtool_tag && exists $libtool_tags{$lang->libtool_tag};
6125 $link_command =
6126 "\$(LIBTOOL) $libtool_tag\$(AM_LIBTOOLFLAGS) \$(LIBTOOLFLAGS) "
6127 . "--mode=link " . $link_command;
6128 }
6130 # Rewrite each occurrence of `AM_$flag' in the link
6131 # command into `${derived}_$flag' if it exists.
6132 my $orig_command = $link_command;
6133 my @flags = (@{$lang->flags}, 'LDFLAGS');
6134 push @flags, 'LIBTOOLFLAGS' if var 'LIBTOOL';
6135 for my $flag (@flags)
6136 {
6137 my $val = "${target}_$flag";
6138 $link_command =~ s/\(AM_$flag\)/\($val\)/
6139 if set_seen ($val);
6140 }
6142 # If the computed command is the same as the generic command, use
6143 # the command linker variable.
6144 return $lang->linker
6145 if $link_command eq $orig_command;
6147 &define_variable ("${target}_LINK", $link_command, INTERNAL);
6148 return "${target}_LINK";
6149 }
6151 ################################################################
6153 # &check_trailing_slash ($WHERE, $LINE)
6154 # --------------------------------------
6155 # Return 1 iff $LINE ends with a slash.
6156 # Might modify $LINE.
6157 sub check_trailing_slash ($\$)
6158 {
6159 my ($where, $line) = @_;
6161 # Ignore `##' lines.
6162 return 0 if $$line =~ /$IGNORE_PATTERN/o;
6164 # Catch and fix a common error.
6165 msg "syntax", $where, "whitespace following trailing backslash"
6166 if $$line =~ s/\\\s+\n$/\\\n/;
6168 return $$line =~ /\\$/;
6169 }
6172 # &read_am_file ($AMFILE, $WHERE)
6173 # -------------------------------
6174 # Read Makefile.am and set up %contents. Simultaneously copy lines
6175 # from Makefile.am into $output_trailer, or define variables as
6176 # appropriate. NOTE we put rules in the trailer section. We want
6177 # user rules to come after our generated stuff.
6178 sub read_am_file ($$)
6179 {
6180 my ($amfile, $where) = @_;
6182 my $am_file = new Automake::XFile ("< $amfile");
6183 verb "reading $amfile";
6185 # Keep track of the youngest output dependency.
6186 my $mtime = mtime $amfile;
6187 $output_deps_greatest_timestamp = $mtime
6188 if $mtime > $output_deps_greatest_timestamp;
6190 my $spacing = '';
6191 my $comment = '';
6192 my $blank = 0;
6193 my $saw_bk = 0;
6194 my $var_look = VAR_ASIS;
6196 use constant IN_VAR_DEF => 0;
6197 use constant IN_RULE_DEF => 1;
6198 use constant IN_COMMENT => 2;
6199 my $prev_state = IN_RULE_DEF;
6201 while ($_ = $am_file->getline)
6202 {
6203 $where->set ("$amfile:$.");
6204 if (/$IGNORE_PATTERN/o)
6205 {
6206 # Merely delete comments beginning with two hashes.
6207 }
6208 elsif (/$WHITE_PATTERN/o)
6209 {
6210 error $where, "blank line following trailing backslash"
6211 if $saw_bk;
6212 # Stick a single white line before the incoming macro or rule.
6213 $spacing = "\n";
6214 $blank = 1;
6215 # Flush all comments seen so far.
6216 if ($comment ne '')
6217 {
6218 $output_vars .= $comment;
6219 $comment = '';
6220 }
6221 }
6222 elsif (/$COMMENT_PATTERN/o)
6223 {
6224 # Stick comments before the incoming macro or rule. Make
6225 # sure a blank line precedes the first block of comments.
6226 $spacing = "\n" unless $blank;
6227 $blank = 1;
6228 $comment .= $spacing . $_;
6229 $spacing = '';
6230 $prev_state = IN_COMMENT;
6231 }
6232 else
6233 {
6234 last;
6235 }
6236 $saw_bk = check_trailing_slash ($where, $_);
6237 }
6239 # We save the conditional stack on entry, and then check to make
6240 # sure it is the same on exit. This lets us conditionally include
6241 # other files.
6242 my @saved_cond_stack = @cond_stack;
6243 my $cond = new Automake::Condition (@cond_stack);
6245 my $last_var_name = '';
6246 my $last_var_type = '';
6247 my $last_var_value = '';
6248 my $last_where;
6249 # FIXME: shouldn't use $_ in this loop; it is too big.
6250 while ($_)
6251 {
6252 $where->set ("$amfile:$.");
6254 # Make sure the line is \n-terminated.
6255 chomp;
6256 $_ .= "\n";
6258 # Don't look at MAINTAINER_MODE_TRUE here. That shouldn't be
6259 # used by users. @MAINT@ is an anachronism now.
6260 $_ =~ s/\@MAINT\@//g
6261 unless $seen_maint_mode;
6263 my $new_saw_bk = check_trailing_slash ($where, $_);
6265 if (/$IGNORE_PATTERN/o)
6266 {
6267 # Merely delete comments beginning with two hashes.
6269 # Keep any backslash from the previous line.
6270 $new_saw_bk = $saw_bk;
6271 }
6272 elsif (/$WHITE_PATTERN/o)
6273 {
6274 # Stick a single white line before the incoming macro or rule.
6275 $spacing = "\n";
6276 error $where, "blank line following trailing backslash"
6277 if $saw_bk;
6278 }
6279 elsif (/$COMMENT_PATTERN/o)
6280 {
6281 error $where, "comment following trailing backslash"
6282 if $saw_bk && $comment eq '';
6284 # Stick comments before the incoming macro or rule.
6285 $comment .= $spacing . $_;
6286 $spacing = '';
6287 $prev_state = IN_COMMENT;
6288 }
6289 elsif ($saw_bk)
6290 {
6291 if ($prev_state == IN_RULE_DEF)
6292 {
6293 my $cond = new Automake::Condition @cond_stack;
6294 $output_trailer .= $cond->subst_string;
6295 $output_trailer .= $_;
6296 }
6297 elsif ($prev_state == IN_COMMENT)
6298 {
6299 # If the line doesn't start with a `#', add it.
6300 # We do this because a continued comment like
6301 # # A = foo \
6302 # bar \
6303 # baz
6304 # is not portable. BSD make doesn't honor
6305 # escaped newlines in comments.
6306 s/^#?/#/;
6307 $comment .= $spacing . $_;
6308 }
6309 else # $prev_state == IN_VAR_DEF
6310 {
6311 $last_var_value .= ' '
6312 unless $last_var_value =~ /\s$/;
6313 $last_var_value .= $_;
6315 if (!/\\$/)
6316 {
6317 Automake::Variable::define ($last_var_name, VAR_MAKEFILE,
6318 $last_var_type, $cond,
6319 $last_var_value, $comment,
6320 $last_where, VAR_ASIS)
6321 if $cond != FALSE;
6322 $comment = $spacing = '';
6323 }
6324 }
6325 }
6327 elsif (/$IF_PATTERN/o)
6328 {
6329 $cond = cond_stack_if ($1, $2, $where);
6330 }
6331 elsif (/$ELSE_PATTERN/o)
6332 {
6333 $cond = cond_stack_else ($1, $2, $where);
6334 }
6335 elsif (/$ENDIF_PATTERN/o)
6336 {
6337 $cond = cond_stack_endif ($1, $2, $where);
6338 }
6340 elsif (/$RULE_PATTERN/o)
6341 {
6342 # Found a rule.
6343 $prev_state = IN_RULE_DEF;
6345 # For now we have to output all definitions of user rules
6346 # and can't diagnose duplicates (see the comment in
6347 # Automake::Rule::define). So we go on and ignore the return value.
6348 Automake::Rule::define ($1, $amfile, RULE_USER, $cond, $where);
6350 check_variable_expansions ($_, $where);
6352 $output_trailer .= $comment . $spacing;
6353 my $cond = new Automake::Condition @cond_stack;
6354 $output_trailer .= $cond->subst_string;
6355 $output_trailer .= $_;
6356 $comment = $spacing = '';
6357 }
6358 elsif (/$ASSIGNMENT_PATTERN/o)
6359 {
6360 # Found a macro definition.
6361 $prev_state = IN_VAR_DEF;
6362 $last_var_name = $1;
6363 $last_var_type = $2;
6364 $last_var_value = $3;
6365 $last_where = $where->clone;
6366 if ($3 ne '' && substr ($3, -1) eq "\\")
6367 {
6368 # We preserve the `\' because otherwise the long lines
6369 # that are generated will be truncated by broken
6370 # `sed's.
6371 $last_var_value = $3 . "\n";
6372 }
6373 # Normally we try to output variable definitions in the
6374 # same format they were input. However, POSIX compliant
6375 # systems are not required to support lines longer than
6376 # 2048 bytes (most notably, some sed implementation are
6377 # limited to 4000 bytes, and sed is used by config.status
6378 # to rewrite Makefile.in into Makefile). Moreover nobody
6379 # would really write such long lines by hand since it is
6380 # hardly maintainable. So if a line is longer that 1000
6381 # bytes (an arbitrary limit), assume it has been
6382 # automatically generated by some tools, and flatten the
6383 # variable definition. Otherwise, keep the variable as it
6384 # as been input.
6385 $var_look = VAR_PRETTY if length ($last_var_value) >= 1000;
6387 if (!/\\$/)
6388 {
6389 Automake::Variable::define ($last_var_name, VAR_MAKEFILE,
6390 $last_var_type, $cond,
6391 $last_var_value, $comment,
6392 $last_where, $var_look)
6393 if $cond != FALSE;
6394 $comment = $spacing = '';
6395 $var_look = VAR_ASIS;
6396 }
6397 }
6398 elsif (/$INCLUDE_PATTERN/o)
6399 {
6400 my $path = $1;
6402 if ($path =~ s/^\$\(top_srcdir\)\///)
6403 {
6404 push (@include_stack, "\$\(top_srcdir\)/$path");
6405 # Distribute any included file.
6407 # Always use the $(top_srcdir) prefix in DIST_COMMON,
6408 # otherwise OSF make will implicitly copy the included
6409 # file in the build tree during `make distdir' to satisfy
6410 # the dependency.
6411 # (subdircond2.test and subdircond3.test will fail.)
6412 push_dist_common ("\$\(top_srcdir\)/$path");
6413 }
6414 else
6415 {
6416 $path =~ s/\$\(srcdir\)\///;
6417 push (@include_stack, "\$\(srcdir\)/$path");
6418 # Always use the $(srcdir) prefix in DIST_COMMON,
6419 # otherwise OSF make will implicitly copy the included
6420 # file in the build tree during `make distdir' to satisfy
6421 # the dependency.
6422 # (subdircond2.test and subdircond3.test will fail.)
6423 push_dist_common ("\$\(srcdir\)/$path");
6424 $path = $relative_dir . "/" . $path if $relative_dir ne '.';
6425 }
6426 $where->push_context ("`$path' included from here");
6427 &read_am_file ($path, $where);
6428 $where->pop_context;
6429 }
6430 else
6431 {
6432 # This isn't an error; it is probably a continued rule.
6433 # In fact, this is what we assume.
6434 $prev_state = IN_RULE_DEF;
6435 check_variable_expansions ($_, $where);
6436 $output_trailer .= $comment . $spacing;
6437 my $cond = new Automake::Condition @cond_stack;
6438 $output_trailer .= $cond->subst_string;
6439 $output_trailer .= $_;
6440 $comment = $spacing = '';
6441 error $where, "`#' comment at start of rule is unportable"
6442 if $_ =~ /^\t\s*\#/;
6443 }
6445 $saw_bk = $new_saw_bk;
6446 $_ = $am_file->getline;
6447 }
6449 $output_trailer .= $comment;
6451 error ($where, "trailing backslash on last line")
6452 if $saw_bk;
6454 error ($where, (@cond_stack ? "unterminated conditionals: @cond_stack"
6455 : "too many conditionals closed in include file"))
6456 if "@saved_cond_stack" ne "@cond_stack";
6457 }
6460 # define_standard_variables ()
6461 # ----------------------------
6462 # A helper for read_main_am_file which initializes configure variables
6463 # and variables from header-vars.am.
6464 sub define_standard_variables
6465 {
6466 my $saved_output_vars = $output_vars;
6467 my ($comments, undef, $rules) =
6468 file_contents_internal (1, "$libdir/am/header-vars.am",
6469 new Automake::Location);
6471 foreach my $var (sort keys %configure_vars)
6472 {
6473 &define_configure_variable ($var);
6474 }
6476 $output_vars .= $comments . $rules;
6477 }
6479 # Read main am file.
6480 sub read_main_am_file
6481 {
6482 my ($amfile) = @_;
6484 # This supports the strange variable tricks we are about to play.
6485 prog_error (macros_dump () . "variable defined before read_main_am_file")
6486 if (scalar (variables) > 0);
6488 # Generate copyright header for generated Makefile.in.
6489 # We do discard the output of predefined variables, handled below.
6490 $output_vars = ("# $in_file_name generated by automake "
6491 . $VERSION . " from $am_file_name.\n");
6492 $output_vars .= '# ' . subst ('configure_input') . "\n";
6493 $output_vars .= $gen_copyright;
6495 # We want to predefine as many variables as possible. This lets
6496 # the user set them with `+=' in Makefile.am.
6497 &define_standard_variables;
6499 # Read user file, which might override some of our values.
6500 &read_am_file ($amfile, new Automake::Location);
6501 }
6505 ################################################################
6507 # $FLATTENED
6508 # &flatten ($STRING)
6509 # ------------------
6510 # Flatten the $STRING and return the result.
6511 sub flatten
6512 {
6513 $_ = shift;
6515 s/\\\n//somg;
6516 s/\s+/ /g;
6517 s/^ //;
6518 s/ $//;
6520 return $_;
6521 }
6524 # transform_token ($TOKEN, \%PAIRS, $KEY)
6525 # =======================================
6526 # Return the value associated to $KEY in %PAIRS, as used on $TOKEN
6527 # (which should be ?KEY? or any of the special %% requests)..
6528 sub transform_token ($$$)
6529 {
6530 my ($token, $transform, $key) = @_;
6531 my $res = $transform->{$key};
6532 prog_error "Unknown key `$key' in `$token'" unless defined $res;
6533 return $res;
6534 }
6537 # transform ($TOKEN, \%PAIRS)
6538 # ===========================
6539 # If ($TOKEN, $VAL) is in %PAIRS:
6540 # - replaces %KEY% with $VAL,
6541 # - enables/disables ?KEY? and ?!KEY?,
6542 # - replaces %?KEY% with TRUE or FALSE.
6543 # - replaces %KEY?IFTRUE%, %KEY:IFFALSE%, and %KEY?IFTRUE:IFFALSE% with
6544 # IFTRUE / IFFALSE, as appropriate.
6545 sub transform ($$)
6546 {
6547 my ($token, $transform) = @_;
6549 # %KEY%.
6550 # Must be before the following pattern to exclude the case
6551 # when there is neither IFTRUE nor IFFALSE.
6552 if ($token =~ /^%([\w\-]+)%$/)
6553 {
6554 return transform_token ($token, $transform, $1);
6555 }
6556 # %KEY?IFTRUE%, %KEY:IFFALSE%, and %KEY?IFTRUE:IFFALSE%.
6557 elsif ($token =~ /^%([\w\-]+)(?:\?([^?:%]+))?(?::([^?:%]+))?%$/)
6558 {
6559 return transform_token ($token, $transform, $1) ? ($2 || '') : ($3 || '');
6560 }
6561 # %?KEY%.
6562 elsif ($token =~ /^%\?([\w\-]+)%$/)
6563 {
6564 return transform_token ($token, $transform, $1) ? 'TRUE' : 'FALSE';
6565 }
6566 # ?KEY? and ?!KEY?.
6567 elsif ($token =~ /^ \? (!?) ([\w\-]+) \? $/x)
6568 {
6569 my $neg = ($1 eq '!') ? 1 : 0;
6570 my $val = transform_token ($token, $transform, $2);
6571 return (!!$val == $neg) ? '##%' : '';
6572 }
6573 else
6574 {
6575 prog_error "Unknown request format: $token";
6576 }
6577 }
6580 # @PARAGRAPHS
6581 # &make_paragraphs ($MAKEFILE, [%TRANSFORM])
6582 # ------------------------------------------
6583 # Load a $MAKEFILE, apply the %TRANSFORM, and return it as a list of
6584 # paragraphs.
6585 sub make_paragraphs ($%)
6586 {
6587 my ($file, %transform) = @_;
6589 # Complete %transform with global options.
6590 # Note that %transform goes last, so it overrides global options.
6591 %transform = ('CYGNUS' => !! option 'cygnus',
6592 'MAINTAINER-MODE'
6593 => $seen_maint_mode ? subst ('MAINTAINER_MODE_TRUE') : '',
6595 'LZMA' => !! option 'dist-lzma',
6596 'BZIP2' => !! option 'dist-bzip2',
6597 'COMPRESS' => !! option 'dist-tarZ',
6598 'GZIP' => ! option 'no-dist-gzip',
6599 'SHAR' => !! option 'dist-shar',
6600 'ZIP' => !! option 'dist-zip',
6602 'INSTALL-INFO' => ! option 'no-installinfo',
6603 'INSTALL-MAN' => ! option 'no-installman',
6604 'CK-NEWS' => !! option 'check-news',
6606 'SUBDIRS' => !! var ('SUBDIRS'),
6607 'TOPDIR_P' => $relative_dir eq '.',
6609 'BUILD' => ($seen_canonical >= AC_CANONICAL_BUILD),
6610 'HOST' => ($seen_canonical >= AC_CANONICAL_HOST),
6611 'TARGET' => ($seen_canonical >= AC_CANONICAL_TARGET),
6613 'LIBTOOL' => !! var ('LIBTOOL'),
6614 'NONLIBTOOL' => 1,
6615 'FIRST' => ! $transformed_files{$file},
6616 %transform);
6618 $transformed_files{$file} = 1;
6619 $_ = $am_file_cache{$file};
6621 if (! defined $_)
6622 {
6623 verb "reading $file";
6624 # Swallow the whole file.
6625 my $fc_file = new Automake::XFile "< $file";
6626 my $saved_dollar_slash = $/;
6627 undef $/;
6628 $_ = $fc_file->getline;
6629 $/ = $saved_dollar_slash;
6630 $fc_file->close;
6632 # Remove ##-comments.
6633 # Besides we don't need more than two consecutive new-lines.
6634 s/(?:$IGNORE_PATTERN|(?<=\n\n)\n+)//gom;
6636 $am_file_cache{$file} = $_;
6637 }
6639 # Substitute Automake template tokens.
6640 s/(?: % \?? [\w\-]+ %
6641 | % [\w\-]+ (?:\?[^?:%]+)? (?::[^?:%]+)? %
6642 | \? !? [\w\-]+ \?
6643 )/transform($&, \%transform)/gex;
6644 # transform() may have added some ##%-comments to strip.
6645 # (we use `##%' instead of `##' so we can distinguish ##%##%##% from
6646 # ####### and do not remove the latter.)
6647 s/^[ \t]*(?:##%)+.*\n//gm;
6649 # Split at unescaped new lines.
6650 my @lines = split (/(?<!\\)\n/, $_);
6651 my @res;
6653 while (defined ($_ = shift @lines))
6654 {
6655 my $paragraph = $_;
6656 # If we are a rule, eat as long as we start with a tab.
6657 if (/$RULE_PATTERN/smo)
6658 {
6659 while (defined ($_ = shift @lines) && $_ =~ /^\t/)
6660 {
6661 $paragraph .= "\n$_";
6662 }
6663 unshift (@lines, $_);
6664 }
6666 # If we are a comments, eat as much comments as you can.
6667 elsif (/$COMMENT_PATTERN/smo)
6668 {
6669 while (defined ($_ = shift @lines)
6670 && $_ =~ /$COMMENT_PATTERN/smo)
6671 {
6672 $paragraph .= "\n$_";
6673 }
6674 unshift (@lines, $_);
6675 }
6677 push @res, $paragraph;
6678 }
6680 return @res;
6681 }
6685 # ($COMMENT, $VARIABLES, $RULES)
6686 # &file_contents_internal ($IS_AM, $FILE, $WHERE, [%TRANSFORM])
6687 # -------------------------------------------------------------
6688 # Return contents of a file from $libdir/am, automatically skipping
6689 # macros or rules which are already known. $IS_AM iff the caller is
6690 # reading an Automake file (as opposed to the user's Makefile.am).
6691 sub file_contents_internal ($$$%)
6692 {
6693 my ($is_am, $file, $where, %transform) = @_;
6695 $where->set ($file);
6697 my $result_vars = '';
6698 my $result_rules = '';
6699 my $comment = '';
6700 my $spacing = '';
6702 # The following flags are used to track rules spanning across
6703 # multiple paragraphs.
6704 my $is_rule = 0; # 1 if we are processing a rule.
6705 my $discard_rule = 0; # 1 if the current rule should not be output.
6707 # We save the conditional stack on entry, and then check to make
6708 # sure it is the same on exit. This lets us conditionally include
6709 # other files.
6710 my @saved_cond_stack = @cond_stack;
6711 my $cond = new Automake::Condition (@cond_stack);
6713 foreach (make_paragraphs ($file, %transform))
6714 {
6715 # FIXME: no line number available.
6716 $where->set ($file);
6718 # Sanity checks.
6719 error $where, "blank line following trailing backslash:\n$_"
6720 if /\\$/;
6721 error $where, "comment following trailing backslash:\n$_"
6722 if /\\#/;
6724 if (/^$/)
6725 {
6726 $is_rule = 0;
6727 # Stick empty line before the incoming macro or rule.
6728 $spacing = "\n";
6729 }
6730 elsif (/$COMMENT_PATTERN/mso)
6731 {
6732 $is_rule = 0;
6733 # Stick comments before the incoming macro or rule.
6734 $comment = "$_\n";
6735 }
6737 # Handle inclusion of other files.
6738 elsif (/$INCLUDE_PATTERN/o)
6739 {
6740 if ($cond != FALSE)
6741 {
6742 my $file = ($is_am ? "$libdir/am/" : '') . $1;
6743 $where->push_context ("`$file' included from here");
6744 # N-ary `.=' fails.
6745 my ($com, $vars, $rules)
6746 = file_contents_internal ($is_am, $file, $where, %transform);
6747 $where->pop_context;
6748 $comment .= $com;
6749 $result_vars .= $vars;
6750 $result_rules .= $rules;
6751 }
6752 }
6754 # Handling the conditionals.
6755 elsif (/$IF_PATTERN/o)
6756 {
6757 $cond = cond_stack_if ($1, $2, $file);
6758 }
6759 elsif (/$ELSE_PATTERN/o)
6760 {
6761 $cond = cond_stack_else ($1, $2, $file);
6762 }
6763 elsif (/$ENDIF_PATTERN/o)
6764 {
6765 $cond = cond_stack_endif ($1, $2, $file);
6766 }
6768 # Handling rules.
6769 elsif (/$RULE_PATTERN/mso)
6770 {
6771 $is_rule = 1;
6772 $discard_rule = 0;
6773 # Separate relationship from optional actions: the first
6774 # `new-line tab" not preceded by backslash (continuation
6775 # line).
6776 my $paragraph = $_;
6777 /^(.*?)(?:(?<!\\)\n(\t.*))?$/s;
6778 my ($relationship, $actions) = ($1, $2 || '');
6780 # Separate targets from dependencies: the first colon.
6781 $relationship =~ /^([^:]+\S+) *: *(.*)$/som;
6782 my ($targets, $dependencies) = ($1, $2);
6783 # Remove the escaped new lines.
6784 # I don't know why, but I have to use a tmp $flat_deps.
6785 my $flat_deps = &flatten ($dependencies);
6786 my @deps = split (' ', $flat_deps);
6788 foreach (split (' ' , $targets))
6789 {
6790 # FIXME: 1. We are not robust to people defining several targets
6791 # at once, only some of them being in %dependencies. The
6792 # actions from the targets in %dependencies are usually generated
6793 # from the content of %actions, but if some targets in $targets
6794 # are not in %dependencies the ELSE branch will output
6795 # a rule for all $targets (i.e. the targets which are both
6796 # in %dependencies and $targets will have two rules).
6798 # FIXME: 2. The logic here is not able to output a
6799 # multi-paragraph rule several time (e.g. for each condition
6800 # it is defined for) because it only knows the first paragraph.
6802 # FIXME: 3. We are not robust to people defining a subset
6803 # of a previously defined "multiple-target" rule. E.g.
6804 # `foo:' after `foo bar:'.
6806 # Output only if not in FALSE.
6807 if (defined $dependencies{$_} && $cond != FALSE)
6808 {
6809 &depend ($_, @deps);
6810 register_action ($_, $actions);
6811 }
6812 else
6813 {
6814 # Free-lance dependency. Output the rule for all the
6815 # targets instead of one by one.
6816 my @undefined_conds =
6817 Automake::Rule::define ($targets, $file,
6818 $is_am ? RULE_AUTOMAKE : RULE_USER,
6819 $cond, $where);
6820 for my $undefined_cond (@undefined_conds)
6821 {
6822 my $condparagraph = $paragraph;
6823 $condparagraph =~ s/^/$undefined_cond->subst_string/gme;
6824 $result_rules .= "$spacing$comment$condparagraph\n";
6825 }
6826 if (scalar @undefined_conds == 0)
6827 {
6828 # Remember to discard next paragraphs
6829 # if they belong to this rule.
6830 # (but see also FIXME: #2 above.)
6831 $discard_rule = 1;
6832 }
6833 $comment = $spacing = '';
6834 last;
6835 }
6836 }
6837 }
6839 elsif (/$ASSIGNMENT_PATTERN/mso)
6840 {
6841 my ($var, $type, $val) = ($1, $2, $3);
6842 error $where, "variable `$var' with trailing backslash"
6843 if /\\$/;
6845 $is_rule = 0;
6847 Automake::Variable::define ($var,
6848 $is_am ? VAR_AUTOMAKE : VAR_MAKEFILE,
6849 $type, $cond, $val, $comment, $where,
6850 VAR_ASIS)
6851 if $cond != FALSE;
6853 $comment = $spacing = '';
6854 }
6855 else
6856 {
6857 # This isn't an error; it is probably some tokens which
6858 # configure is supposed to replace, such as `@SET-MAKE@',
6859 # or some part of a rule cut by an if/endif.
6860 if (! $cond->false && ! ($is_rule && $discard_rule))
6861 {
6862 s/^/$cond->subst_string/gme;
6863 $result_rules .= "$spacing$comment$_\n";
6864 }
6865 $comment = $spacing = '';
6866 }
6867 }
6869 error ($where, @cond_stack ?
6870 "unterminated conditionals: @cond_stack" :
6871 "too many conditionals closed in include file")
6872 if "@saved_cond_stack" ne "@cond_stack";
6874 return ($comment, $result_vars, $result_rules);
6875 }
6878 # $CONTENTS
6879 # &file_contents ($BASENAME, $WHERE, [%TRANSFORM])
6880 # ------------------------------------------------
6881 # Return contents of a file from $libdir/am, automatically skipping
6882 # macros or rules which are already known.
6883 sub file_contents ($$%)
6884 {
6885 my ($basename, $where, %transform) = @_;
6886 my ($comments, $variables, $rules) =
6887 file_contents_internal (1, "$libdir/am/$basename.am", $where,
6888 %transform);
6889 return "$comments$variables$rules";
6890 }
6893 # @PREFIX
6894 # &am_primary_prefixes ($PRIMARY, $CAN_DIST, @PREFIXES)
6895 # -----------------------------------------------------
6896 # Find all variable prefixes that are used for install directories. A
6897 # prefix `zar' qualifies iff:
6898 #
6899 # * `zardir' is a variable.
6900 # * `zar_PRIMARY' is a variable.
6901 #
6902 # As a side effect, it looks for misspellings. It is an error to have
6903 # a variable ending in a "reserved" suffix whose prefix is unknown, e.g.
6904 # "bni_PROGRAMS". However, unusual prefixes are allowed if a variable
6905 # of the same name (with "dir" appended) exists. For instance, if the
6906 # variable "zardir" is defined, then "zar_PROGRAMS" becomes valid.
6907 # This is to provide a little extra flexibility in those cases which
6908 # need it.
6909 sub am_primary_prefixes ($$@)
6910 {
6911 my ($primary, $can_dist, @prefixes) = @_;
6913 local $_;
6914 my %valid = map { $_ => 0 } @prefixes;
6915 $valid{'EXTRA'} = 0;
6916 foreach my $var (variables $primary)
6917 {
6918 # Automake is allowed to define variables that look like primaries
6919 # but which aren't. E.g. INSTALL_sh_DATA.
6920 # Autoconf can also define variables like INSTALL_DATA, so
6921 # ignore all configure variables (at least those which are not
6922 # redefined in Makefile.am).
6923 # FIXME: We should make sure that these variables are not
6924 # conditionally defined (or else adjust the condition below).
6925 my $def = $var->def (TRUE);
6926 next if $def && $def->owner != VAR_MAKEFILE;
6928 my $varname = $var->name;
6930 if ($varname =~ /^(nobase_)?(dist_|nodist_)?(.*)_[[:alnum:]]+$/)
6931 {
6932 my ($base, $dist, $X) = ($1 || '', $2 || '', $3 || '');
6933 if ($dist ne '' && ! $can_dist)
6934 {
6935 err_var ($var,
6936 "invalid variable `$varname': `dist' is forbidden");
6937 }
6938 # Standard directories must be explicitly allowed.
6939 elsif (! defined $valid{$X} && exists $standard_prefix{$X})
6940 {
6941 err_var ($var,
6942 "`${X}dir' is not a legitimate directory " .
6943 "for `$primary'");
6944 }
6945 # A not explicitly valid directory is allowed if Xdir is defined.
6946 elsif (! defined $valid{$X} &&
6947 $var->requires_variables ("`$varname' is used", "${X}dir"))
6948 {
6949 # Nothing to do. Any error message has been output
6950 # by $var->requires_variables.
6951 }
6952 else
6953 {
6954 # Ensure all extended prefixes are actually used.
6955 $valid{"$base$dist$X"} = 1;
6956 }
6957 }
6958 else
6959 {
6960 prog_error "unexpected variable name: $varname";
6961 }
6962 }
6964 # Return only those which are actually defined.
6965 return sort grep { var ($_ . '_' . $primary) } keys %valid;
6966 }
6969 # Handle `where_HOW' variable magic. Does all lookups, generates
6970 # install code, and possibly generates code to define the primary
6971 # variable. The first argument is the name of the .am file to munge,
6972 # the second argument is the primary variable (e.g. HEADERS), and all
6973 # subsequent arguments are possible installation locations.
6974 #
6975 # Returns list of [$location, $value] pairs, where
6976 # $value's are the values in all where_HOW variable, and $location
6977 # there associated location (the place here their parent variables were
6978 # defined).
6979 #
6980 # FIXME: this should be rewritten to be cleaner. It should be broken
6981 # up into multiple functions.
6982 #
6983 # Usage is: am_install_var (OPTION..., file, HOW, where...)
6984 sub am_install_var
6985 {
6986 my (@args) = @_;
6988 my $do_require = 1;
6989 my $can_dist = 0;
6990 my $default_dist = 0;
6991 while (@args)
6992 {
6993 if ($args[0] eq '-noextra')
6994 {
6995 $do_require = 0;
6996 }
6997 elsif ($args[0] eq '-candist')
6998 {
6999 $can_dist = 1;
7000 }
7001 elsif ($args[0] eq '-defaultdist')
7002 {
7003 $default_dist = 1;
7004 $can_dist = 1;
7005 }
7006 elsif ($args[0] !~ /^-/)
7007 {
7008 last;
7009 }
7010 shift (@args);
7011 }
7013 my ($file, $primary, @prefix) = @args;
7015 # Now that configure substitutions are allowed in where_HOW
7016 # variables, it is an error to actually define the primary. We
7017 # allow `JAVA', as it is customarily used to mean the Java
7018 # interpreter. This is but one of several Java hacks. Similarly,
7019 # `PYTHON' is customarily used to mean the Python interpreter.
7020 reject_var $primary, "`$primary' is an anachronism"
7021 unless $primary eq 'JAVA' || $primary eq 'PYTHON';
7023 # Get the prefixes which are valid and actually used.
7024 @prefix = am_primary_prefixes ($primary, $can_dist, @prefix);
7026 # If a primary includes a configure substitution, then the EXTRA_
7027 # form is required. Otherwise we can't properly do our job.
7028 my $require_extra;
7030 my @used = ();
7031 my @result = ();
7033 foreach my $X (@prefix)
7034 {
7035 my $nodir_name = $X;
7036 my $one_name = $X . '_' . $primary;
7037 my $one_var = var $one_name;
7039 my $strip_subdir = 1;
7040 # If subdir prefix should be preserved, do so.
7041 if ($nodir_name =~ /^nobase_/)
7042 {
7043 $strip_subdir = 0;
7044 $nodir_name =~ s/^nobase_//;
7045 }
7047 # If files should be distributed, do so.
7048 my $dist_p = 0;
7049 if ($can_dist)
7050 {
7051 $dist_p = (($default_dist && $nodir_name !~ /^nodist_/)
7052 || (! $default_dist && $nodir_name =~ /^dist_/));
7053 $nodir_name =~ s/^(dist|nodist)_//;
7054 }
7057 # Use the location of the currently processed variable.
7058 # We are not processing a particular condition, so pick the first
7059 # available.
7060 my $tmpcond = $one_var->conditions->one_cond;
7061 my $where = $one_var->rdef ($tmpcond)->location->clone;
7063 # Append actual contents of where_PRIMARY variable to
7064 # @result, skipping @substitutions@.
7065 foreach my $locvals ($one_var->value_as_list_recursive (location => 1))
7066 {
7067 my ($loc, $value) = @$locvals;
7068 # Skip configure substitutions.
7069 if ($value =~ /^\@.*\@$/)
7070 {
7071 if ($nodir_name eq 'EXTRA')
7072 {
7073 error ($where,
7074 "`$one_name' contains configure substitution, "
7075 . "but shouldn't");
7076 }
7077 # Check here to make sure variables defined in
7078 # configure.ac do not imply that EXTRA_PRIMARY
7079 # must be defined.
7080 elsif (! defined $configure_vars{$one_name})
7081 {
7082 $require_extra = $one_name
7083 if $do_require;
7084 }
7085 }
7086 else
7087 {
7088 push (@result, $locvals);
7089 }
7090 }
7091 # A blatant hack: we rewrite each _PROGRAMS primary to include
7092 # EXEEXT.
7093 append_exeext { 1 } $one_name
7094 if $primary eq 'PROGRAMS';
7095 # "EXTRA" shouldn't be used when generating clean targets,
7096 # all, or install targets. We used to warn if EXTRA_FOO was
7097 # defined uselessly, but this was annoying.
7098 next
7099 if $nodir_name eq 'EXTRA';
7101 if ($nodir_name eq 'check')
7102 {
7103 push (@check, '$(' . $one_name . ')');
7104 }
7105 else
7106 {
7107 push (@used, '$(' . $one_name . ')');
7108 }
7110 # Is this to be installed?
7111 my $install_p = $nodir_name ne 'noinst' && $nodir_name ne 'check';
7113 # If so, with install-exec? (or install-data?).
7114 my $exec_p = ($nodir_name =~ /$EXEC_DIR_PATTERN/o);
7116 my $check_options_p = $install_p && !! option 'std-options';
7118 # Use the location of the currently processed variable as context.
7119 $where->push_context ("while processing `$one_name'");
7121 # The variable containing all file to distribute.
7122 my $distvar = "\$($one_name)";
7123 $distvar = shadow_unconditionally ($one_name, $where)
7124 if ($dist_p && $one_var->has_conditional_contents);
7126 # Singular form of $PRIMARY.
7127 (my $one_primary = $primary) =~ s/S$//;
7128 $output_rules .= &file_contents ($file, $where,
7129 PRIMARY => $primary,
7130 ONE_PRIMARY => $one_primary,
7131 DIR => $X,
7132 NDIR => $nodir_name,
7133 BASE => $strip_subdir,
7135 EXEC => $exec_p,
7136 INSTALL => $install_p,
7137 DIST => $dist_p,
7138 DISTVAR => $distvar,
7139 'CK-OPTS' => $check_options_p);
7140 }
7142 # The JAVA variable is used as the name of the Java interpreter.
7143 # The PYTHON variable is used as the name of the Python interpreter.
7144 if (@used && $primary ne 'JAVA' && $primary ne 'PYTHON')
7145 {
7146 # Define it.
7147 define_pretty_variable ($primary, TRUE, INTERNAL, @used);
7148 $output_vars .= "\n";
7149 }
7151 err_var ($require_extra,
7152 "`$require_extra' contains configure substitution,\n"
7153 . "but `EXTRA_$primary' not defined")
7154 if ($require_extra && ! var ('EXTRA_' . $primary));
7156 # Push here because PRIMARY might be configure time determined.
7157 push (@all, '$(' . $primary . ')')
7158 if @used && $primary ne 'JAVA' && $primary ne 'PYTHON';
7160 # Make the result unique. This lets the user use conditionals in
7161 # a natural way, but still lets us program lazily -- we don't have
7162 # to worry about handling a particular object more than once.
7163 # We will keep only one location per object.
7164 my %result = ();
7165 for my $pair (@result)
7166 {
7167 my ($loc, $val) = @$pair;
7168 $result{$val} = $loc;
7169 }
7170 my @l = sort keys %result;
7171 return map { [$result{$_}->clone, $_] } @l;
7172 }
7175 ################################################################
7177 # Each key in this hash is the name of a directory holding a
7178 # Makefile.in. These variables are local to `is_make_dir'.
7179 my %make_dirs = ();
7180 my $make_dirs_set = 0;
7182 sub is_make_dir
7183 {
7184 my ($dir) = @_;
7185 if (! $make_dirs_set)
7186 {
7187 foreach my $iter (@configure_input_files)
7188 {
7189 $make_dirs{dirname ($iter)} = 1;
7190 }
7191 # We also want to notice Makefile.in's.
7192 foreach my $iter (@other_input_files)
7193 {
7194 if ($iter =~ /Makefile\.in$/)
7195 {
7196 $make_dirs{dirname ($iter)} = 1;
7197 }
7198 }
7199 $make_dirs_set = 1;
7200 }
7201 return defined $make_dirs{$dir};
7202 }
7204 ################################################################
7206 # Find the aux dir. This should match the algorithm used by
7207 # ./configure. (See the Autoconf documentation for for
7208 # AC_CONFIG_AUX_DIR.)
7209 sub locate_aux_dir ()
7210 {
7211 if (! $config_aux_dir_set_in_configure_ac)
7212 {
7213 # The default auxiliary directory is the first
7214 # of ., .., or ../.. that contains install-sh.
7215 # Assume . if install-sh doesn't exist yet.
7216 for my $dir (qw (. .. ../..))
7217 {
7218 if (-f "$dir/install-sh")
7219 {
7220 $config_aux_dir = $dir;
7221 last;
7222 }
7223 }
7224 $config_aux_dir = '.' unless $config_aux_dir;
7225 }
7226 # Avoid unsightly '/.'s.
7227 $am_config_aux_dir =
7228 '$(top_srcdir)' . ($config_aux_dir eq '.' ? "" : "/$config_aux_dir");
7229 $am_config_aux_dir =~ s,/*$,,;
7230 }
7233 # &maybe_push_required_file ($DIR, $FILE, $FULLFILE)
7234 # --------------------------------------------------
7235 # See if we want to push this file onto dist_common. This function
7236 # encodes the rules for deciding when to do so.
7237 sub maybe_push_required_file
7238 {
7239 my ($dir, $file, $fullfile) = @_;
7241 if ($dir eq $relative_dir)
7242 {
7243 push_dist_common ($file);
7244 return 1;
7245 }
7246 elsif ($relative_dir eq '.' && ! &is_make_dir ($dir))
7247 {
7248 # If we are doing the topmost directory, and the file is in a
7249 # subdir which does not have a Makefile, then we distribute it
7250 # here.
7252 # If a required file is above the source tree, it is important
7253 # to prefix it with `$(srcdir)' so that no VPATH search is
7254 # performed. Otherwise problems occur with Make implementations
7255 # that rewrite and simplify rules whose dependencies are found in a
7256 # VPATH location. Here is an example with OSF1/Tru64 Make.
7257 #
7258 # % cat Makefile
7259 # VPATH = sub
7260 # distdir: ../a
7261 # echo ../a
7262 # % ls
7263 # Makefile a
7264 # % make
7265 # echo a
7266 # a
7267 #
7268 # Dependency `../a' was found in `sub/../a', but this make
7269 # implementation simplified it as `a'. (Note that the sub/
7270 # directory does not even exist.)
7271 #
7272 # This kind of VPATH rewriting seems hard to cancel. The
7273 # distdir.am hack against VPATH rewriting works only when no
7274 # simplification is done, i.e., for dependencies which are in
7275 # subdirectories, not in enclosing directories. Hence, in
7276 # the latter case we use a full path to make sure no VPATH
7277 # search occurs.
7278 $fullfile = '$(srcdir)/' . $fullfile
7279 if $dir =~ m,^\.\.(?:$|/),;
7281 push_dist_common ($fullfile);
7282 return 1;
7283 }
7284 return 0;
7285 }
7288 # If a file name appears as a key in this hash, then it has already
7289 # been checked for. This allows us not to report the same error more
7290 # than once.
7291 my %required_file_not_found = ();
7293 # &require_file_internal ($WHERE, $MYSTRICT, $DIRECTORY, @FILES)
7294 # --------------------------------------------------------------
7295 # Verify that the file must exist in $DIRECTORY, or install it.
7296 # $MYSTRICT is the strictness level at which this file becomes required.
7297 sub require_file_internal ($$$@)
7298 {
7299 my ($where, $mystrict, $dir, @files) = @_;
7301 foreach my $file (@files)
7302 {
7303 my $fullfile = "$dir/$file";
7304 my $found_it = 0;
7305 my $dangling_sym = 0;
7307 if (-l $fullfile && ! -f $fullfile)
7308 {
7309 $dangling_sym = 1;
7310 }
7311 elsif (dir_has_case_matching_file ($dir, $file))
7312 {
7313 $found_it = 1;
7314 maybe_push_required_file ($dir, $file, $fullfile);
7315 }
7317 # `--force-missing' only has an effect if `--add-missing' is
7318 # specified.
7319 if ($found_it && (! $add_missing || ! $force_missing))
7320 {
7321 next;
7322 }
7323 else
7324 {
7325 # If we've already looked for it, we're done. You might
7326 # wonder why we don't do this before searching for the
7327 # file. If we do that, then something like
7328 # AC_OUTPUT(subdir/foo foo) will fail to put foo.in into
7329 # DIST_COMMON.
7330 if (! $found_it)
7331 {
7332 next if defined $required_file_not_found{$fullfile};
7333 $required_file_not_found{$fullfile} = 1;
7334 }
7336 if ($strictness >= $mystrict)
7337 {
7338 if ($dangling_sym && $add_missing)
7339 {
7340 unlink ($fullfile);
7341 }
7343 my $trailer = '';
7344 my $suppress = 0;
7346 # Only install missing files according to our desired
7347 # strictness level.
7348 my $message = "required file `$fullfile' not found";
7349 if ($add_missing)
7350 {
7351 if (-f "$libdir/$file")
7352 {
7353 $suppress = 1;
7355 # Install the missing file. Symlink if we
7356 # can, copy if we must. Note: delete the file
7357 # first, in case it is a dangling symlink.
7358 $message = "installing `$fullfile'";
7359 # Windows Perl will hang if we try to delete a
7360 # file that doesn't exist.
7361 unlink ($fullfile) if -f $fullfile;
7362 if ($symlink_exists && ! $copy_missing)
7363 {
7364 if (! symlink ("$libdir/$file", $fullfile))
7365 {
7366 $suppress = 0;
7367 $trailer = "; error while making link: $!";
7368 }
7369 }
7370 elsif (system ('cp', "$libdir/$file", $fullfile))
7371 {
7372 $suppress = 0;
7373 $trailer = "\n error while copying";
7374 }
7375 reset_dir_cache ($dir);
7376 }
7378 if (! maybe_push_required_file (dirname ($fullfile),
7379 $file, $fullfile))
7380 {
7381 if (! $found_it && ! $automake_will_process_aux_dir)
7382 {
7383 # We have added the file but could not push it
7384 # into DIST_COMMON, probably because this is
7385 # an auxiliary file and we are not processing
7386 # the top level Makefile. Furthermore Automake
7387 # hasn't been asked to create the Makefile.in
7388 # that distribute the aux dir files.
7389 error ($where, 'Please make a full run of automake'
7390 . " so $fullfile gets distributed.");
7391 }
7392 }
7393 }
7394 else
7395 {
7396 $trailer = "\n `automake --add-missing' can install `$file'"
7397 if -f "$libdir/$file";
7398 }
7400 # If --force-missing was specified, and we have
7401 # actually found the file, then do nothing.
7402 next
7403 if $found_it && $force_missing;
7405 # If we couldn't install the file, but it is a target in
7406 # the Makefile, don't print anything. This allows files
7407 # like README, AUTHORS, or THANKS to be generated.
7408 next
7409 if !$suppress && rule $file;
7411 msg ($suppress ? 'note' : 'error', $where, "$message$trailer");
7412 }
7413 }
7414 }
7415 }
7417 # &require_file ($WHERE, $MYSTRICT, @FILES)
7418 # -----------------------------------------
7419 sub require_file ($$@)
7420 {
7421 my ($where, $mystrict, @files) = @_;
7422 require_file_internal ($where, $mystrict, $relative_dir, @files);
7423 }
7425 # &require_file_with_macro ($COND, $MACRO, $MYSTRICT, @FILES)
7426 # -----------------------------------------------------------
7427 sub require_file_with_macro ($$$@)
7428 {
7429 my ($cond, $macro, $mystrict, @files) = @_;
7430 $macro = rvar ($macro) unless ref $macro;
7431 require_file ($macro->rdef ($cond)->location, $mystrict, @files);
7432 }
7434 # &require_libsource_with_macro ($COND, $MACRO, $MYSTRICT, @FILES)
7435 # ----------------------------------------------------------------
7436 # Require an AC_LIBSOURCEd file. If AC_CONFIG_LIBOBJ_DIR was called, it
7437 # must be in that directory. Otherwise expect it in the current directory.
7438 sub require_libsource_with_macro ($$$@)
7439 {
7440 my ($cond, $macro, $mystrict, @files) = @_;
7441 $macro = rvar ($macro) unless ref $macro;
7442 if ($config_libobj_dir)
7443 {
7444 require_file_internal ($macro->rdef ($cond)->location, $mystrict,
7445 $config_libobj_dir, @files);
7446 }
7447 else
7448 {
7449 require_file ($macro->rdef ($cond)->location, $mystrict, @files);
7450 }
7451 }
7453 # &require_conf_file ($WHERE, $MYSTRICT, @FILES)
7454 # ----------------------------------------------
7455 # Looks in configuration path, as specified by AC_CONFIG_AUX_DIR.
7456 sub require_conf_file ($$@)
7457 {
7458 my ($where, $mystrict, @files) = @_;
7459 require_file_internal ($where, $mystrict, $config_aux_dir, @files);
7460 }
7463 # &require_conf_file_with_macro ($COND, $MACRO, $MYSTRICT, @FILES)
7464 # ----------------------------------------------------------------
7465 sub require_conf_file_with_macro ($$$@)
7466 {
7467 my ($cond, $macro, $mystrict, @files) = @_;
7468 require_conf_file (rvar ($macro)->rdef ($cond)->location,
7469 $mystrict, @files);
7470 }
7472 ################################################################
7474 # &require_build_directory ($DIRECTORY)
7475 # ------------------------------------
7476 # Emit rules to create $DIRECTORY if needed, and return
7477 # the file that any target requiring this directory should be made
7478 # dependent upon.
7479 # We don't want to emit the rule twice, and want to reuse it
7480 # for directories with equivalent names (e.g., `foo/bar' and `./foo//bar').
7481 sub require_build_directory ($)
7482 {
7483 my $directory = shift;
7485 return $directory_map{$directory} if exists $directory_map{$directory};
7487 my $cdir = File::Spec->canonpath ($directory);
7489 if (exists $directory_map{$cdir})
7490 {
7491 my $stamp = $directory_map{$cdir};
7492 $directory_map{$directory} = $stamp;
7493 return $stamp;
7494 }
7496 my $dirstamp = "$cdir/\$(am__dirstamp)";
7498 $directory_map{$directory} = $dirstamp;
7499 $directory_map{$cdir} = $dirstamp;
7501 # Set a variable for the dirstamp basename.
7502 define_pretty_variable ('am__dirstamp', TRUE, INTERNAL,
7503 '$(am__leading_dot)dirstamp');
7505 # Directory must be removed by `make distclean'.
7506 $clean_files{$dirstamp} = DIST_CLEAN;
7508 $output_rules .= ("$dirstamp:\n"
7509 . "\t\@\$(MKDIR_P) $directory\n"
7510 . "\t\@: > $dirstamp\n");
7512 return $dirstamp;
7513 }
7515 # &require_build_directory_maybe ($FILE)
7516 # --------------------------------------
7517 # If $FILE lies in a subdirectory, emit a rule to create this
7518 # directory and return the file that $FILE should be made
7519 # dependent upon. Otherwise, just return the empty string.
7520 sub require_build_directory_maybe ($)
7521 {
7522 my $file = shift;
7523 my $directory = dirname ($file);
7525 if ($directory ne '.')
7526 {
7527 return require_build_directory ($directory);
7528 }
7529 else
7530 {
7531 return '';
7532 }
7533 }
7535 ################################################################
7537 # Push a list of files onto dist_common.
7538 sub push_dist_common
7539 {
7540 prog_error "push_dist_common run after handle_dist"
7541 if $handle_dist_run;
7542 Automake::Variable::define ('DIST_COMMON', VAR_AUTOMAKE, '+', TRUE, "@_",
7543 '', INTERNAL, VAR_PRETTY);
7544 }
7547 ################################################################
7549 # generate_makefile ($MAKEFILE_AM, $MAKEFILE_IN)
7550 # ----------------------------------------------
7551 # Generate a Makefile.in given the name of the corresponding Makefile and
7552 # the name of the file output by config.status.
7553 sub generate_makefile ($$)
7554 {
7555 my ($makefile_am, $makefile_in) = @_;
7557 # Reset all the Makefile.am related variables.
7558 initialize_per_input;
7560 # AUTOMAKE_OPTIONS can contains -W flags to disable or enable
7561 # warnings for this file. So hold any warning issued before
7562 # we have processed AUTOMAKE_OPTIONS.
7563 buffer_messages ('warning');
7565 # Name of input file ("Makefile.am") and output file
7566 # ("Makefile.in"). These have no directory components.
7567 $am_file_name = basename ($makefile_am);
7568 $in_file_name = basename ($makefile_in);
7570 # $OUTPUT is encoded. If it contains a ":" then the first element
7571 # is the real output file, and all remaining elements are input
7572 # files. We don't scan or otherwise deal with these input files,
7573 # other than to mark them as dependencies. See
7574 # &scan_autoconf_files for details.
7575 my ($makefile, @inputs) = split (/:/, $output_files{$makefile_in});
7577 $relative_dir = dirname ($makefile);
7578 $am_relative_dir = dirname ($makefile_am);
7579 $topsrcdir = backname ($relative_dir);
7581 read_main_am_file ($makefile_am);
7582 if (handle_options)
7583 {
7584 # Process buffered warnings.
7585 flush_messages;
7586 # Fatal error. Just return, so we can continue with next file.
7587 return;
7588 }
7589 # Process buffered warnings.
7590 flush_messages;
7592 # There are a few install-related variables that you should not define.
7593 foreach my $var ('PRE_INSTALL', 'POST_INSTALL', 'NORMAL_INSTALL')
7594 {
7595 my $v = var $var;
7596 if ($v)
7597 {
7598 my $def = $v->def (TRUE);
7599 prog_error "$var not defined in condition TRUE"
7600 unless $def;
7601 reject_var $var, "`$var' should not be defined"
7602 if $def->owner != VAR_AUTOMAKE;
7603 }
7604 }
7606 # Catch some obsolete variables.
7607 msg_var ('obsolete', 'INCLUDES',
7608 "`INCLUDES' is the old name for `AM_CPPFLAGS' (or `*_CPPFLAGS')")
7609 if var ('INCLUDES');
7611 # Must do this after reading .am file.
7612 define_variable ('subdir', $relative_dir, INTERNAL);
7614 # If DIST_SUBDIRS is defined, make sure SUBDIRS is, so that
7615 # recursive rules are enabled.
7616 define_pretty_variable ('SUBDIRS', TRUE, INTERNAL, '')
7617 if var 'DIST_SUBDIRS' && ! var 'SUBDIRS';
7619 # Check first, because we might modify some state.
7620 check_cygnus;
7621 check_gnu_standards;
7622 check_gnits_standards;
7624 handle_configure ($makefile_am, $makefile_in, $makefile, @inputs);
7625 handle_gettext;
7626 handle_libraries;
7627 handle_ltlibraries;
7628 handle_programs;
7629 handle_scripts;
7631 # These must be run after all the sources are scanned. They
7632 # use variables defined by &handle_libraries, &handle_ltlibraries,
7633 # or &handle_programs.
7634 handle_compile;
7635 handle_languages;
7636 handle_libtool;
7638 # Variables used by distdir.am and tags.am.
7639 define_pretty_variable ('SOURCES', TRUE, INTERNAL, @sources);
7640 if (! option 'no-dist')
7641 {
7642 define_pretty_variable ('DIST_SOURCES', TRUE, INTERNAL, @dist_sources);
7643 }
7645 handle_multilib;
7646 handle_texinfo;
7647 handle_emacs_lisp;
7648 handle_python;
7649 handle_java;
7650 handle_man_pages;
7651 handle_data;
7652 handle_headers;
7653 handle_subdirs;
7654 handle_tags;
7655 handle_minor_options;
7656 # Must come after handle_programs so that %known_programs is up-to-date.
7657 handle_tests;
7659 # This must come after most other rules.
7660 handle_dist;
7662 handle_footer;
7663 do_check_merge_target;
7664 handle_all ($makefile);
7666 # FIXME: Gross!
7667 if (var ('lib_LTLIBRARIES') && var ('bin_PROGRAMS'))
7668 {
7669 $output_rules .= "install-binPROGRAMS: install-libLTLIBRARIES\n\n";
7670 }
7672 handle_install;
7673 handle_clean ($makefile);
7674 handle_factored_dependencies;
7676 # Comes last, because all the above procedures may have
7677 # defined or overridden variables.
7678 $output_vars .= output_variables;
7680 check_typos;
7682 my ($out_file) = $output_directory . '/' . $makefile_in;
7684 if ($exit_code != 0)
7685 {
7686 verb "not writing $out_file because of earlier errors";
7687 return;
7688 }
7690 if (! -d ($output_directory . '/' . $am_relative_dir))
7691 {
7692 mkdir ($output_directory . '/' . $am_relative_dir, 0755);
7693 }
7695 # We make sure that `all:' is the first target.
7696 my $output =
7697 "$output_vars$output_all$output_header$output_rules$output_trailer";
7699 # Decide whether we must update the output file or not.
7700 # We have to update in the following situations.
7701 # * $force_generation is set.
7702 # * any of the output dependencies is younger than the output
7703 # * the contents of the output is different (this can happen
7704 # if the project has been populated with a file listed in
7705 # @common_files since the last run).
7706 # Output's dependencies are split in two sets:
7707 # * dependencies which are also configure dependencies
7708 # These do not change between each Makefile.am
7709 # * other dependencies, specific to the Makefile.am being processed
7710 # (such as the Makefile.am itself, or any Makefile fragment
7711 # it includes).
7712 my $timestamp = mtime $out_file;
7713 if (! $force_generation
7714 && $configure_deps_greatest_timestamp < $timestamp
7715 && $output_deps_greatest_timestamp < $timestamp
7716 && $output eq contents ($out_file))
7717 {
7718 verb "$out_file unchanged";
7719 # No need to update.
7720 return;
7721 }
7723 if (-e $out_file)
7724 {
7725 unlink ($out_file)
7726 or fatal "cannot remove $out_file: $!\n";
7727 }
7729 my $gm_file = new Automake::XFile "> $out_file";
7730 verb "creating $out_file";
7731 print $gm_file $output;
7732 }
7734 ################################################################
7739 ################################################################
7741 # Print usage information.
7742 sub usage ()
7743 {
7744 print "Usage: $0 [OPTION] ... [Makefile]...
7746 Generate Makefile.in for configure from Makefile.am.
7748 Operation modes:
7749 --help print this help, then exit
7750 --version print version number, then exit
7751 -v, --verbose verbosely list files processed
7752 --no-force only update Makefile.in's that are out of date
7753 -W, --warnings=CATEGORY report the warnings falling in CATEGORY
7755 Dependency tracking:
7756 -i, --ignore-deps disable dependency tracking code
7757 --include-deps enable dependency tracking code
7759 Flavors:
7760 --cygnus assume program is part of Cygnus-style tree
7761 --foreign set strictness to foreign
7762 --gnits set strictness to gnits
7763 --gnu set strictness to gnu
7765 Library files:
7766 -a, --add-missing add missing standard files to package
7767 --libdir=DIR directory storing library files
7768 -c, --copy with -a, copy missing files (default is symlink)
7769 -f, --force-missing force update of standard files
7771 ";
7772 Automake::ChannelDefs::usage;
7774 my ($last, @lcomm);
7775 $last = '';
7776 foreach my $iter (sort ((@common_files, @common_sometimes)))
7777 {
7778 push (@lcomm, $iter) unless $iter eq $last;
7779 $last = $iter;
7780 }
7782 my @four;
7783 print "\nFiles which are automatically distributed, if found:\n";
7784 format USAGE_FORMAT =
7785 @<<<<<<<<<<<<<<<< @<<<<<<<<<<<<<<<< @<<<<<<<<<<<<<<<< @<<<<<<<<<<<<<<<<
7786 $four[0], $four[1], $four[2], $four[3]
7787 .
7788 $~ = "USAGE_FORMAT";
7790 my $cols = 4;
7791 my $rows = int(@lcomm / $cols);
7792 my $rest = @lcomm % $cols;
7794 if ($rest)
7795 {
7796 $rows++;
7797 }
7798 else
7799 {
7800 $rest = $cols;
7801 }
7803 for (my $y = 0; $y < $rows; $y++)
7804 {
7805 @four = ("", "", "", "");
7806 for (my $x = 0; $x < $cols; $x++)
7807 {
7808 last if $y + 1 == $rows && $x == $rest;
7810 my $idx = (($x > $rest)
7811 ? ($rows * $rest + ($rows - 1) * ($x - $rest))
7812 : ($rows * $x));
7814 $idx += $y;
7815 $four[$x] = $lcomm[$idx];
7816 }
7817 write;
7818 }
7820 print "\nReport bugs to <bug-automake\@gnu.org>.\n";
7822 # --help always returns 0 per GNU standards.
7823 exit 0;
7824 }
7827 # &version ()
7828 # -----------
7829 # Print version information
7830 sub version ()
7831 {
7832 print <<EOF;
7833 automake (GNU $PACKAGE) $VERSION
7834 Copyright (C) 2008 Free Software Foundation, Inc.
7835 License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
7836 This is free software: you are free to change and redistribute it.
7837 There is NO WARRANTY, to the extent permitted by law.
7839 Written by Tom Tromey <tromey\@redhat.com>
7840 and Alexandre Duret-Lutz <adl\@gnu.org>.
7841 EOF
7842 # --version always returns 0 per GNU standards.
7843 exit 0;
7844 }
7846 ################################################################
7848 # Parse command line.
7849 sub parse_arguments ()
7850 {
7851 # Start off as gnu.
7852 set_strictness ('gnu');
7854 my $cli_where = new Automake::Location;
7855 my %cli_options =
7856 (
7857 'libdir=s' => \$libdir,
7858 'gnu' => sub { set_strictness ('gnu'); },
7859 'gnits' => sub { set_strictness ('gnits'); },
7860 'cygnus' => sub { set_global_option ('cygnus', $cli_where); },
7861 'foreign' => sub { set_strictness ('foreign'); },
7862 'include-deps' => sub { unset_global_option ('no-dependencies'); },
7863 'i|ignore-deps' => sub { set_global_option ('no-dependencies',
7864 $cli_where); },
7865 'no-force' => sub { $force_generation = 0; },
7866 'f|force-missing' => \$force_missing,
7867 'o|output-dir=s' => \$output_directory,
7868 'a|add-missing' => \$add_missing,
7869 'c|copy' => \$copy_missing,
7870 'v|verbose' => sub { setup_channel 'verb', silent => 0; },
7871 'W|warnings=s' => \&parse_warnings,
7872 # These long options (--Werror and --Wno-error) for backward
7873 # compatibility. Use -Werror and -Wno-error today.
7874 'Werror' => sub { parse_warnings 'W', 'error'; },
7875 'Wno-error' => sub { parse_warnings 'W', 'no-error'; },
7876 );
7877 use Getopt::Long;
7878 Getopt::Long::config ("bundling", "pass_through");
7880 # See if --version or --help is used. We want to process these before
7881 # anything else because the GNU Coding Standards require us to
7882 # `exit 0' after processing these options, and we can't guarantee this
7883 # if we treat other options first. (Handling other options first
7884 # could produce error diagnostics, and in this condition it is
7885 # confusing if Automake does `exit 0'.)
7886 my %cli_options_1st_pass =
7887 (
7888 'version' => \&version,
7889 'help' => \&usage,
7890 # Recognize all other options (and their arguments) but do nothing.
7891 map { $_ => sub {} } (keys %cli_options)
7892 );
7893 my @ARGV_backup = @ARGV;
7894 Getopt::Long::GetOptions %cli_options_1st_pass
7895 or exit 1;
7896 @ARGV = @ARGV_backup;
7898 # Now *really* process the options. This time we know that --help
7899 # and --version are not present, but we specify them nonetheless so
7900 # that ambiguous abbreviation are diagnosed.
7901 Getopt::Long::GetOptions %cli_options, 'version' => sub {}, 'help' => sub {}
7902 or exit 1;
7904 if (defined $output_directory)
7905 {
7906 msg 'obsolete', "`--output-dir' is deprecated\n";
7907 }
7908 else
7909 {
7910 # In the next release we'll remove this entirely.
7911 $output_directory = '.';
7912 }
7914 return unless @ARGV;
7916 if ($ARGV[0] =~ /^-./)
7917 {
7918 my %argopts;
7919 for my $k (keys %cli_options)
7920 {
7921 if ($k =~ /(.*)=s$/)
7922 {
7923 map { $argopts{(length ($_) == 1)
7924 ? "-$_" : "--$_" } = 1; } (split (/\|/, $1));
7925 }
7926 }
7927 if ($ARGV[0] eq '--')
7928 {
7929 shift @ARGV;
7930 }
7931 elsif (exists $argopts{$ARGV[0]})
7932 {
7933 fatal ("option `$ARGV[0]' requires an argument\n"
7934 . "Try `$0 --help' for more information.");
7935 }
7936 else
7937 {
7938 fatal ("unrecognized option `$ARGV[0]'.\n"
7939 . "Try `$0 --help' for more information.");
7940 }
7941 }
7943 my $errspec = 0;
7944 foreach my $arg (@ARGV)
7945 {
7946 fatal ("empty argument\nTry `$0 --help' for more information.")
7947 if ($arg eq '');
7949 # Handle $local:$input syntax.
7950 my ($local, @rest) = split (/:/, $arg);
7951 @rest = ("$local.in",) unless @rest;
7952 my $input = locate_am @rest;
7953 if ($input)
7954 {
7955 push @input_files, $input;
7956 $output_files{$input} = join (':', ($local, @rest));
7957 }
7958 else
7959 {
7960 error "no Automake input file found for `$arg'";
7961 $errspec = 1;
7962 }
7963 }
7964 fatal "no input file found among supplied arguments"
7965 if $errspec && ! @input_files;
7966 }
7968 ################################################################
7970 # Parse the WARNINGS environment variable.
7971 parse_WARNINGS;
7973 # Parse command line.
7974 parse_arguments;
7976 $configure_ac = require_configure_ac;
7978 # Do configure.ac scan only once.
7979 scan_autoconf_files;
7981 if (! @input_files)
7982 {
7983 my $msg = '';
7984 $msg = "\nDid you forget AC_CONFIG_FILES([Makefile]) in $configure_ac?"
7985 if -f 'Makefile.am';
7986 fatal ("no `Makefile.am' found for any configure output$msg");
7987 }
7989 # Now do all the work on each file.
7990 foreach my $file (@input_files)
7991 {
7992 ($am_file = $file) =~ s/\.in$//;
7993 if (! -f ($am_file . '.am'))
7994 {
7995 error "`$am_file.am' does not exist";
7996 }
7997 else
7998 {
7999 # Any warning setting now local to this Makefile.am.
8000 dup_channel_setup;
8002 generate_makefile ($am_file . '.am', $file);
8004 # Back out any warning setting.
8005 drop_channel_setup;
8006 }
8007 }
8009 exit $exit_code;
8012 ### Setup "GNU" style for perl-mode and cperl-mode.
8013 ## Local Variables:
8014 ## perl-indent-level: 2
8015 ## perl-continued-statement-offset: 2
8016 ## perl-continued-brace-offset: 0
8017 ## perl-brace-offset: 0
8018 ## perl-brace-imaginary-offset: 0
8019 ## perl-label-offset: -2
8020 ## cperl-indent-level: 2
8021 ## cperl-brace-offset: 0
8022 ## cperl-continued-brace-offset: 0
8023 ## cperl-label-offset: -2
8024 ## cperl-extra-newline-before-brace: t
8025 ## cperl-merge-trailing-else: nil
8026 ## cperl-continued-statement-offset: 2
8027 ## End: